256672335898 has 16 divisors (see below), whose sum is σ = 420332159520. Its totient is φ = 116579554000.

The previous prime is 256672335889. The next prime is 256672335911. The reversal of 256672335898 is 898533276652.

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, 4455208 + ... + 4512451.

It is an arithmetic number, because the mean of its divisors is an integer number (26270759970).

Almost surely, 2^256672335898 is an apocalyptic number.

256672335898 is a deficient number, since it is larger than the sum of its proper divisors (163659823622).

256672335898 is a wasteful number, since it uses less digits than its factorization.

256672335898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8968973.

The product of its digits is 130636800, while the sum is 64.

It can be divided in two parts, 2566723 and 35898, that added together give a triangular number (2602621 = T₂₂₈₁).

The spelling of 256672335898 in words is "two hundred fifty-six billion, six hundred seventy-two million, three hundred thirty-five thousand, eight hundred ninety-eight".