656215604552 has 16 divisors (see below), whose sum is σ = 1230716365440. Its totient is φ = 328024573776.

The previous prime is 656215604537. The next prime is 656215604557. The reversal of 656215604552 is 255406512656.

It is a junction number, because it is equal to n+sod(n) for n = 656215604497 and 656215604506.

It is not an unprimeable number, because it can be changed into a prime (656215604557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10370048 + ... + 10433135.

It is an arithmetic number, because the mean of its divisors is an integer number (76919772840).

Almost surely, 2^656215604552 is an apocalyptic number.

It is an amenable number.

656215604552 is a deficient number, since it is larger than the sum of its proper divisors (574500760888).

656215604552 is a wasteful number, since it uses less digits than its factorization.

656215604552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20807132 (or 20807128 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 47.

The spelling of 656215604552 in words is "six hundred fifty-six billion, two hundred fifteen million, six hundred four thousand, five hundred fifty-two".