656551163142 has 64 divisors (see below), whose sum is σ = 1694766528000. Its totient is φ = 184510859040.

The previous prime is 656551163113. The next prime is 656551163159. The reversal of 656551163142 is 241361155656.

656551163142 is a `hidden beast` number, since 6 + 5 + 6 + 5 + 5 + 1 + 1 + 631 + 4 + 2 = 666.

It is a super-2 number, since 2×656551163142² (a number of 24 digits) contains 22 as substring.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 14213892 + ... + 14260007.

It is an arithmetic number, because the mean of its divisors is an integer number (26480727000).

Almost surely, 2^656551163142 is an apocalyptic number.

656551163142 is an abundant number, since it is smaller than the sum of its proper divisors (1038215364858).

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

656551163142 is a wasteful number, since it uses less digits than its factorization.

656551163142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28473978 (or 28473972 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 656551163142 in words is "six hundred fifty-six billion, five hundred fifty-one million, one hundred sixty-three thousand, one hundred forty-two".