256855534032361 has 16 divisors (see below), whose sum is σ = 280904366131200. Its totient is φ = 232923207488400.

The previous prime is 256855534032341. The next prime is 256855534032389. The reversal of 256855534032361 is 163230435558652.

It is not a de Polignac number, because 256855534032361 - 2⁷ = 256855534032233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256855534032296 and 256855534032305.

It is not an unprimeable number, because it can be changed into a prime (256855534032301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40906480 + ... + 46765918.

It is an arithmetic number, because the mean of its divisors is an integer number (17556522883200).

Almost surely, 2^{256855534032361} is an apocalyptic number.

It is an amenable number.

256855534032361 is a deficient number, since it is larger than the sum of its proper divisors (24048832098839).

256855534032361 is a wasteful number, since it uses less digits than its factorization.

256855534032361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5869380.

The product of its (nonzero) digits is 77760000, while the sum is 58.

The spelling of 256855534032361 in words is "two hundred fifty-six trillion, eight hundred fifty-five billion, five hundred thirty-four million, thirty-two thousand, three hundred sixty-one".