256613023251516 has 24 divisors (see below), whose sum is σ = 598866831763200. Its totient is φ = 85522944296752.

The previous prime is 256613023251463. The next prime is 256613023251523. The reversal of 256613023251516 is 615152320316652.

It is a congruent number.

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, 1841192466 + ... + 1841331833.

It is an arithmetic number, because the mean of its divisors is an integer number (24952784656800).

Almost surely, 2^{256613023251516} is an apocalyptic number.

It is an amenable number.

256613023251516 is an abundant number, since it is smaller than the sum of its proper divisors (342253808511684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256613023251516 is a wasteful number, since it uses less digits than its factorization.

256613023251516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682530113 (or 3682530111 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 256613023251516 in words is "two hundred fifty-six trillion, six hundred thirteen billion, twenty-three million, two hundred fifty-one thousand, five hundred sixteen".