656007021616 has 40 divisors (see below), whose sum is σ = 1277793617760. Its totient is φ = 326254350336.

The previous prime is 656007021599. The next prime is 656007021617. The reversal of 656007021616 is 616120700656.

It is not an unprimeable number, because it can be changed into a prime (656007021617) 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, 28314645 + ... + 28337803.

It is an arithmetic number, because the mean of its divisors is an integer number (31944840444).

Almost surely, 2^656007021616 is an apocalyptic number.

It is an amenable number.

656007021616 is a deficient number, since it is larger than the sum of its proper divisors (621786596144).

656007021616 is a wasteful number, since it uses less digits than its factorization.

656007021616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32533 (or 32527 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 656007021616 in words is "six hundred fifty-six billion, seven million, twenty-one thousand, six hundred sixteen".