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68541860448 = 2534171555507
BaseRepresentation
bin111111110101011010…
…011100101001100000
320112220210121021110000
4333311122130221200
52110333204013243
651253201540000
74644350125635
oct776532345140
9215823537400
1068541860448
1127083103266
121134a644600
136604320999
1434630cc18c
151bb25d45d3
hexff569ca60

68541860448 has 120 divisors (see below), whose sum is σ = 213437474712. Its totient is φ = 21503314944.

The previous prime is 68541860437. The next prime is 68541860449. The reversal of 68541860448 is 84406814586.

It is a happy number.

68541860448 is a `hidden beast` number, since 6 + 85 + 41 + 86 + 0 + 448 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 68541860394 and 68541860403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68541860449) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 733690 + ... + 821817.

Almost surely, 268541860448 is an apocalyptic number.

68541860448 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68541860448 is an abundant number, since it is smaller than the sum of its proper divisors (144895614264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68541860448 is a wasteful number, since it uses less digits than its factorization.

68541860448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555546 (or 1555529 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 54.

The spelling of 68541860448 in words is "sixty-eight billion, five hundred forty-one million, eight hundred sixty thousand, four hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 17 18 24 27 32 34 36 48 51 54 68 72 81 96 102 108 136 144 153 162 204 216 272 288 306 324 408 432 459 544 612 648 816 864 918 1224 1296 1377 1632 1836 2448 2592 2754 3672 4896 5508 7344 11016 14688 22032 44064 1555507 3111014 4666521 6222028 9333042 12444056 13999563 18666084 24888112 26443619 27999126 37332168 41998689 49776224 52887238 55998252 74664336 79330857 83997378 105774476 111996504 125996067 149328672 158661714 167994756 211548952 223993008 237992571 251992134 317323428 335989512 423097904 447986016 475985142 503984268 634646856 671979024 713977713 846195808 951970284 1007968536 1269293712 1343958048 1427955426 1903940568 2015937072 2141933139 2538587424 2855910852 3807881136 4031874144 4283866278 5711821704 7615762272 8567732556 11423643408 17135465112 22847286816 34270930224 68541860448