256901683042 has 16 divisors (see below), whose sum is σ = 385749475200. Its totient is φ = 128318576848.

The previous prime is 256901682943. The next prime is 256901683097. The reversal of 256901683042 is 240386109652.

It is a junction number, because it is equal to n+sod(n) for n = 256901682983 and 256901683001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13012983 + ... + 13032709.

It is an arithmetic number, because the mean of its divisors is an integer number (24109342200).

Almost surely, 2^256901683042 is an apocalyptic number.

256901683042 is a deficient number, since it is larger than the sum of its proper divisors (128847792158).

256901683042 is a wasteful number, since it uses less digits than its factorization.

256901683042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26105.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 256901683042 in words is "two hundred fifty-six billion, nine hundred one million, six hundred eighty-three thousand, forty-two".