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12681490176 = 283211874637
BaseRepresentation
bin10111100111110000…
…00010111100000000
31012201210110110010100
423303320002330000
5201432430141201
65454212202400
7626154613365
oct136370027400
935653413110
1012681490176
1154184092a3
12255b009400
1312713c2b54
1488433846c
154e34d8886
hex2f3e02f00

12681490176 has 108 divisors (see below), whose sum is σ = 36602557992. Its totient is φ = 4222691328.

The previous prime is 12681490163. The next prime is 12681490177. The reversal of 12681490176 is 67109418621.

12681490176 is a `hidden beast` number, since 12 + 6 + 81 + 490 + 1 + 76 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681490177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2732530 + ... + 2737166.

It is an arithmetic number, because the mean of its divisors is an integer number (338912574).

Almost surely, 212681490176 is an apocalyptic number.

12681490176 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12681490176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18301278996).

12681490176 is an abundant number, since it is smaller than the sum of its proper divisors (23921067816).

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

12681490176 is a wasteful number, since it uses less digits than its factorization.

12681490176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5846 (or 5829 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 12681490176 in words is "twelve billion, six hundred eighty-one million, four hundred ninety thousand, one hundred seventy-six".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 256 288 384 576 768 1152 1187 2304 2374 3561 4637 4748 7122 9274 9496 10683 13911 14244 18548 18992 21366 27822 28488 37096 37984 41733 42732 55644 56976 74192 75968 83466 85464 111288 113952 148384 151936 166932 170928 222576 227904 296768 303872 333864 341856 445152 455808 593536 667728 683712 890304 911616 1187072 1335456 1367424 1780608 2670912 2734848 3561216 5341824 5504119 10683648 11008238 16512357 22016476 33024714 44032952 49537071 66049428 88065904 99074142 132098856 176131808 198148284 264197712 352263616 396296568 528395424 704527232 792593136 1056790848 1409054464 1585186272 2113581696 3170372544 4227163392 6340745088 12681490176