256678602026 has 16 divisors (see below), whose sum is σ = 480022320960. Its totient is φ = 100004650080.

The previous prime is 256678602017. The next prime is 256678602029. The reversal of 256678602026 is 620206876652.

It is not an unprimeable number, because it can be changed into a prime (256678602029) 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, 833371931 + ... + 833372238.

It is an arithmetic number, because the mean of its divisors is an integer number (30001395060).

Almost surely, 2^256678602026 is an apocalyptic number.

256678602026 is a deficient number, since it is larger than the sum of its proper divisors (223343718934).

256678602026 is a wasteful number, since it uses less digits than its factorization.

256678602026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666744189.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 256678602026 in words is "two hundred fifty-six billion, six hundred seventy-eight million, six hundred two thousand, twenty-six".