256507724562074 has 16 divisors (see below), whose sum is σ = 407398115906496. Its totient is φ = 120708482020800.

The previous prime is 256507724562073. The next prime is 256507724562121. The reversal of 256507724562074 is 470265427705652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 256507724561998 and 256507724562016.

It is not an unprimeable number, because it can be changed into a prime (256507724562073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28327592 + ... + 36269379.

It is an arithmetic number, because the mean of its divisors is an integer number (25462382244156).

Almost surely, 2^{256507724562074} is an apocalyptic number.

256507724562074 is a deficient number, since it is larger than the sum of its proper divisors (150890391344422).

256507724562074 is a wasteful number, since it uses less digits than its factorization.

256507724562074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64713781.

The product of its (nonzero) digits is 197568000, while the sum is 62.

The spelling of 256507724562074 in words is "two hundred fifty-six trillion, five hundred seven billion, seven hundred twenty-four million, five hundred sixty-two thousand, seventy-four".