256427724652 has 24 divisors (see below), whose sum is σ = 492785862912. Its totient is φ = 115786146000.

The previous prime is 256427724649. The next prime is 256427724667.

256427724652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×256427724652² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256427724652.

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, 19291048 + ... + 19304335.

It is an arithmetic number, because the mean of its divisors is an integer number (20532744288).

Almost surely, 2^256427724652 is an apocalyptic number.

256427724652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256427724652 is a deficient number, since it is larger than the sum of its proper divisors (236358138260).

256427724652 is a wasteful number, since it uses less digits than its factorization.

256427724652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38595549 (or 38595547 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 52.

The spelling of 256427724652 in words is "two hundred fifty-six billion, four hundred twenty-seven million, seven hundred twenty-four thousand, six hundred fifty-two".