66360317712156 has 72 divisors (see below), whose sum is σ = 180696346731264. Its totient is φ = 20413041724800.

The previous prime is 66360317712133. The next prime is 66360317712229. The reversal of 66360317712156 is 65121771306366.

66360317712156 is a `hidden beast` number, since 6 + 6 + 3 + 603 + 1 + 7 + 7 + 1 + 21 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17424316 + ... + 20888451.

Almost surely, 2^{66360317712156} is an apocalyptic number.

It is an amenable number.

66360317712156 is an abundant number, since it is smaller than the sum of its proper divisors (114336029019108).

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

66360317712156 is a wasteful number, since it uses less digits than its factorization.

66360317712156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38316491 (or 38316486 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 66360317712156 in words is "sixty-six trillion, three hundred sixty billion, three hundred seventeen million, seven hundred twelve thousand, one hundred fifty-six".