256113731400 has 96 divisors (see below), whose sum is σ = 794087642400. Its totient is φ = 68285376000.

The previous prime is 256113731351. The next prime is 256113731431. The reversal of 256113731400 is 4137311652.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3837516 + ... + 3903684.

It is an arithmetic number, because the mean of its divisors is an integer number (8271746275).

Almost surely, 2^256113731400 is an apocalyptic number.

256113731400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256113731400 is an abundant number, since it is smaller than the sum of its proper divisors (537973911000).

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

256113731400 is a wasteful number, since it uses less digits than its factorization.

256113731400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72639 (or 72630 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The spelling of 256113731400 in words is "two hundred fifty-six billion, one hundred thirteen million, seven hundred thirty-one thousand, four hundred".