656165156512 has 48 divisors (see below), whose sum is σ = 1348480224000. Its totient is φ = 313931819520.

The previous prime is 656165156509. The next prime is 656165156513. The reversal of 656165156512 is 215651561656.

656165156512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×656165156512² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (656165156513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3627762 + ... + 3804337.

It is an arithmetic number, because the mean of its divisors is an integer number (28093338000).

Almost surely, 2^656165156512 is an apocalyptic number.

656165156512 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

656165156512 is an abundant number, since it is smaller than the sum of its proper divisors (692315067488).

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

656165156512 is a wasteful number, since it uses less digits than its factorization.

656165156512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432229 (or 7432221 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 49.

The spelling of 656165156512 in words is "six hundred fifty-six billion, one hundred sixty-five million, one hundred fifty-six thousand, five hundred twelve".