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68672551941 = 32719319719079
BaseRepresentation
bin111111111101001100…
…111111110000000101
320120020220112002110200
4333331030333300011
52111120133130231
651314151041113
74650525026460
oct777514776005
9216226462420
1068672551941
112713a957764
1211386370199
13662541c126
1434765cc2d7
151bbdcecbe6
hexffd33fc05

68672551941 has 96 divisors (see below), whose sum is σ = 124456550400. Its totient is φ = 35604126720.

The previous prime is 68672551939. The next prime is 68672551949. The reversal of 68672551941 is 14915527686.

It is a happy number.

68672551941 is a `hidden beast` number, since 6 + 8 + 67 + 25 + 519 + 41 = 666.

It is not a de Polignac number, because 68672551941 - 21 = 68672551939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68672551949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3589840 + ... + 3608918.

It is an arithmetic number, because the mean of its divisors is an integer number (1296422400).

Almost surely, 268672551941 is an apocalyptic number.

It is an amenable number.

68672551941 is a deficient number, since it is larger than the sum of its proper divisors (55783998459).

68672551941 is a wasteful number, since it uses less digits than its factorization.

68672551941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19239 (or 19236 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 68672551941 in words is "sixty-eight billion, six hundred seventy-two million, five hundred fifty-one thousand, nine hundred forty-one".

Divisors: 1 3 7 9 19 21 31 57 63 93 97 133 171 217 279 291 399 589 651 679 873 1197 1767 1843 1953 2037 3007 4123 5301 5529 6111 9021 12369 12901 16587 19079 21049 27063 37107 38703 57133 57237 63147 116109 133553 171399 171711 189441 362501 399931 400659 514197 591449 1087503 1199793 1201977 1774347 1850663 2537507 3262509 3599379 4140143 5323041 5551989 7612521 11237531 12420429 12954641 16655967 22837563 33712593 35162597 37261287 38863923 57370553 78662717 101137779 105487791 116591769 172111659 235988151 246138179 316463373 401593871 516334977 707964453 738414537 1090040507 1204781613 2215243611 3270121521 3614344839 7630283549 9810364563 22890850647 68672551941