256670854774 has 8 divisors (see below), whose sum is σ = 385257760488. Its totient is φ = 128251601280.

The previous prime is 256670854751. The next prime is 256670854829. The reversal of 256670854774 is 477458076652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41909227 + ... + 41915350.

It is an arithmetic number, because the mean of its divisors is an integer number (48157220061).

Almost surely, 2^256670854774 is an apocalyptic number.

256670854774 is a deficient number, since it is larger than the sum of its proper divisors (128586905714).

256670854774 is a wasteful number, since it uses less digits than its factorization.

256670854774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83826110.

The product of its (nonzero) digits is 79027200, while the sum is 61.

The spelling of 256670854774 in words is "two hundred fifty-six billion, six hundred seventy million, eight hundred fifty-four thousand, seven hundred seventy-four".