256602366055 has 32 divisors (see below), whose sum is σ = 366199257600. Its totient is φ = 168950904192.

The previous prime is 256602365989. The next prime is 256602366067. The reversal of 256602366055 is 550663206652.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-256602366055 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256602365996 and 256602366014.

It is a congruent number.

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, 1356120 + ... + 1533709.

It is an arithmetic number, because the mean of its divisors is an integer number (11443726800).

Almost surely, 2^256602366055 is an apocalyptic number.

256602366055 is a deficient number, since it is larger than the sum of its proper divisors (109596891545).

256602366055 is a wasteful number, since it uses less digits than its factorization.

256602366055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889943.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 256602366055 in words is "two hundred fifty-six billion, six hundred two million, three hundred sixty-six thousand, fifty-five".