256357076755 has 16 divisors (see below), whose sum is σ = 331386289920. Its totient is φ = 189256088448.

The previous prime is 256357076753. The next prime is 256357076797. The reversal of 256357076755 is 557670753652.

It is a cyclic number.

It is not a de Polignac number, because 256357076755 - 2¹ = 256357076753 is a prime.

It is a super-2 number, since 2×256357076755² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256357076755.

It is not an unprimeable number, because it can be changed into a prime (256357076753) 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, 328515 + ... + 787804.

It is an arithmetic number, because the mean of its divisors is an integer number (20711643120).

Almost surely, 2^256357076755 is an apocalyptic number.

256357076755 is a deficient number, since it is larger than the sum of its proper divisors (75029213165).

256357076755 is a wasteful number, since it uses less digits than its factorization.

256357076755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119870.

The product of its (nonzero) digits is 46305000, while the sum is 58.

The spelling of 256357076755 in words is "two hundred fifty-six billion, three hundred fifty-seven million, seventy-six thousand, seven hundred fifty-five".