2256404243634 has 40 divisors (see below), whose sum is σ = 5322123077040. Its totient is φ = 712548707544.

The previous prime is 2256404243609. The next prime is 2256404243701. The reversal of 2256404243634 is 4363424046522.

2256404243634 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 4 + 0 + 4 + 2 + 4 + 3 + 634 = 666.

It is a super-2 number, since 2×2256404243634² (a number of 26 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 2256404243634.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 366534324 + ... + 366540479.

It is an arithmetic number, because the mean of its divisors is an integer number (133053076926).

Almost surely, 2^{2256404243634} is an apocalyptic number.

2256404243634 is an abundant number, since it is smaller than the sum of its proper divisors (3065718833406).

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

2256404243634 is a wasteful number, since it uses less digits than its factorization.

2256404243634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733074836 (or 733074827 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 45.

The spelling of 2256404243634 in words is "two trillion, two hundred fifty-six billion, four hundred four million, two hundred forty-three thousand, six hundred thirty-four".