656560155516 has 48 divisors (see below), whose sum is σ = 1573544445984. Its totient is φ = 212915955456.

The previous prime is 656560155487. The next prime is 656560155533. The reversal of 656560155516 is 615551065656.

It is a super-2 number, since 2×656560155516² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4426086 + ... + 4572018.

It is an arithmetic number, because the mean of its divisors is an integer number (32782175958).

Almost surely, 2^656560155516 is an apocalyptic number.

It is an amenable number.

656560155516 is an abundant number, since it is smaller than the sum of its proper divisors (916984290468).

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

656560155516 is a wasteful number, since it uses less digits than its factorization.

656560155516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156110 (or 156108 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 656560155516 in words is "six hundred fifty-six billion, five hundred sixty million, one hundred fifty-five thousand, five hundred sixteen".