660501656000 has 112 divisors (see below), whose sum is σ = 1662548863872. Its totient is φ = 259869312000.

The previous prime is 660501655999. The next prime is 660501656021. The reversal of 660501656000 is 656105066.

660501656000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 188744 + ... + 1164743.

Almost surely, 2^660501656000 is an apocalyptic number.

It is an amenable number.

660501656000 is an abundant number, since it is smaller than the sum of its proper divisors (1002047207872).

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

660501656000 is a wasteful number, since it uses less digits than its factorization.

660501656000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353575 (or 1353555 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 660501656000 in words is "six hundred sixty billion, five hundred one million, six hundred fifty-six thousand".