656405563112 has 32 divisors (see below), whose sum is σ = 1325522200800. Its totient is φ = 302936324544.

The previous prime is 656405563111. The next prime is 656405563129. The reversal of 656405563112 is 211365504656.

It is not an unprimeable number, because it can be changed into a prime (656405563111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1427939 + ... + 1830797.

It is an arithmetic number, because the mean of its divisors is an integer number (41422568775).

Almost surely, 2^656405563112 is an apocalyptic number.

It is an amenable number.

656405563112 is an abundant number, since it is smaller than the sum of its proper divisors (669116637688).

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

656405563112 is a wasteful number, since it uses less digits than its factorization.

656405563112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418545 (or 418541 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 656405563112 in words is "six hundred fifty-six billion, four hundred five million, five hundred sixty-three thousand, one hundred twelve".