156685965652272 has 160 divisors (see below), whose sum is σ = 464077493568000. Its totient is φ = 44624174321664.

The previous prime is 156685965652247. The next prime is 156685965652327. The reversal of 156685965652272 is 272256569586651.

It is a junction number, because it is equal to n+sod(n) for n = 156685965652194 and 156685965652203.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 492286879 + ... + 492605057.

It is an arithmetic number, because the mean of its divisors is an integer number (2900484334800).

Almost surely, 2^{156685965652272} is an apocalyptic number.

156685965652272 is a gapful number since it is divisible by the number (12) 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 156685965652272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232038746784000).

156685965652272 is an abundant number, since it is smaller than the sum of its proper divisors (307391527915728).

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

156685965652272 is a wasteful number, since it uses less digits than its factorization.

156685965652272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322883 (or 322877 counting only the distinct ones).

The product of its digits is 3265920000, while the sum is 75.

The spelling of 156685965652272 in words is "one hundred fifty-six trillion, six hundred eighty-five billion, nine hundred sixty-five million, six hundred fifty-two thousand, two hundred seventy-two".