656213206412 has 12 divisors (see below), whose sum is σ = 1159522365456. Its totient is φ = 324921102000.

The previous prime is 656213206393. The next prime is 656213206457. The reversal of 656213206412 is 214602312656.

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 3 ways as a sum of consecutive naturals, for example, 796374839 + ... + 796375662.

It is an arithmetic number, because the mean of its divisors is an integer number (96626863788).

Almost surely, 2^656213206412 is an apocalyptic number.

It is an amenable number.

656213206412 is a deficient number, since it is larger than the sum of its proper divisors (503309159044).

656213206412 is a wasteful number, since it uses less digits than its factorization.

656213206412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592750608 (or 1592750606 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 656213206412 in words is "six hundred fifty-six billion, two hundred thirteen million, two hundred six thousand, four hundred twelve".