656325643446 has 48 divisors (see below), whose sum is σ = 1557351523728. Its totient is φ = 198112665600.

The previous prime is 656325643433. The next prime is 656325643573. The reversal of 656325643446 is 644346523656.

656325643446 is a `hidden beast` number, since 6 + 5 + 6 + 3 + 2 + 564 + 34 + 46 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 656325643392 and 656325643401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6398095 + ... + 6499866.

It is an arithmetic number, because the mean of its divisors is an integer number (32444823411).

Almost surely, 2^656325643446 is an apocalyptic number.

656325643446 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

656325643446 is an abundant number, since it is smaller than the sum of its proper divisors (901025880282).

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

656325643446 is a wasteful number, since it uses less digits than its factorization.

656325643446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12898237 (or 12898234 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 54.

The spelling of 656325643446 in words is "six hundred fifty-six billion, three hundred twenty-five million, six hundred forty-three thousand, four hundred forty-six".