660311107056 has 50 divisors (see below), whose sum is σ = 1911131919312. Its totient is φ = 220103701920.

The previous prime is 660311107037. The next prime is 660311107091. The reversal of 660311107056 is 650701113066.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 660311107056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 254748360 + ... + 254750951.

Almost surely, 2^660311107056 is an apocalyptic number.

It is an amenable number.

660311107056 is an abundant number, since it is smaller than the sum of its proper divisors (1250820812256).

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

660311107056 is a wasteful number, since it uses less digits than its factorization.

660311107056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509499331 (or 509499316 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 660311107056 in words is "six hundred sixty billion, three hundred eleven million, one hundred seven thousand, fifty-six".