2256395031340 has 24 divisors (see below), whose sum is σ = 4739665946400. Its totient is φ = 902322511488.

The previous prime is 2256395031311. The next prime is 2256395031367. The reversal of 2256395031340 is 431305936522.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 14640240 + ... + 14793559.

It is an arithmetic number, because the mean of its divisors is an integer number (197486081100).

Almost surely, 2^{2256395031340} is an apocalyptic number.

2256395031340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2256395031340 is an abundant number, since it is smaller than the sum of its proper divisors (2483270915060).

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

2256395031340 is a wasteful number, since it uses less digits than its factorization.

2256395031340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29437641 (or 29437639 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 43.

The spelling of 2256395031340 in words is "two trillion, two hundred fifty-six billion, three hundred ninety-five million, thirty-one thousand, three hundred forty".