656213215132 has 24 divisors (see below), whose sum is σ = 1154671156800. Its totient is φ = 326310726336.

The previous prime is 656213215123. The next prime is 656213215157. The reversal of 656213215132 is 231512312656.

It is a junction number, because it is equal to n+sod(n) for n = 656213215091 and 656213215100.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 294994 + ... + 1182982.

It is an arithmetic number, because the mean of its divisors is an integer number (48111298200).

Almost surely, 2^656213215132 is an apocalyptic number.

It is an amenable number.

656213215132 is a deficient number, since it is larger than the sum of its proper divisors (498457941668).

656213215132 is a wasteful number, since it uses less digits than its factorization.

656213215132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889005 (or 889003 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

Adding to 656213215132 its reverse (231512312656), we get a palindrome (887725527788).

The spelling of 656213215132 in words is "six hundred fifty-six billion, two hundred thirteen million, two hundred fifteen thousand, one hundred thirty-two".