656113226454 has 144 divisors (see below), whose sum is σ = 1689828993216. Its totient is φ = 183366892800.

The previous prime is 656113226443. The next prime is 656113226471. The reversal of 656113226454 is 454622311656.

656113226454 is a `hidden beast` number, since 6 + 5 + 61 + 132 + 2 + 6 + 454 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 97040434 + ... + 97047194.

It is an arithmetic number, because the mean of its divisors is an integer number (11734923564).

Almost surely, 2^656113226454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656113226454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (844914496608).

656113226454 is an abundant number, since it is smaller than the sum of its proper divisors (1033715766762).

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

656113226454 is a wasteful number, since it uses less digits than its factorization.

656113226454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9171 (or 9161 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The spelling of 656113226454 in words is "six hundred fifty-six billion, one hundred thirteen million, two hundred twenty-six thousand, four hundred fifty-four".