656111451216 has 80 divisors (see below), whose sum is σ = 1932708423744. Its totient is φ = 190005123072.

The previous prime is 656111451211. The next prime is 656111451221. The reversal of 656111451216 is 612154111656.

It is an interprime number because it is at equal distance from previous prime (656111451211) and next prime (656111451221).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656111451211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30914706 + ... + 30935921.

Almost surely, 2^656111451216 is an apocalyptic number.

It is an amenable number.

656111451216 is an abundant number, since it is smaller than the sum of its proper divisors (1276596972528).

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

656111451216 is a wasteful number, since it uses less digits than its factorization.

656111451216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61850668 (or 61850662 counting only the distinct ones).

The product of its digits is 43200, while the sum is 39.

The spelling of 656111451216 in words is "six hundred fifty-six billion, one hundred eleven million, four hundred fifty-one thousand, two hundred sixteen".