256232074075340 has 96 divisors (see below), whose sum is σ = 591656851021824. Its totient is φ = 92436888821760.

The previous prime is 256232074075333. The next prime is 256232074075391. The reversal of 256232074075340 is 43570470232652.

It is a super-2 number, since 2×256232074075340² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568437527 + ... + 568888113.

It is an arithmetic number, because the mean of its divisors is an integer number (6163092198144).

Almost surely, 2^{256232074075340} is an apocalyptic number.

256232074075340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256232074075340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295828425510912).

256232074075340 is an abundant number, since it is smaller than the sum of its proper divisors (335424776946484).

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

256232074075340 is a wasteful number, since it uses less digits than its factorization.

256232074075340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471087 (or 471085 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 50.

The spelling of 256232074075340 in words is "two hundred fifty-six trillion, two hundred thirty-two billion, seventy-four million, seventy-five thousand, three hundred forty".