66715716600212 has 48 divisors (see below), whose sum is σ = 122593220117760. Its totient is φ = 31707645032448.

The previous prime is 66715716600167. The next prime is 66715716600283. The reversal of 66715716600212 is 21200661751766.

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, 14273498 + ... + 18362030.

It is an arithmetic number, because the mean of its divisors is an integer number (2554025419120).

Almost surely, 2^{66715716600212} is an apocalyptic number.

It is an amenable number.

66715716600212 is a deficient number, since it is larger than the sum of its proper divisors (55877503517548).

66715716600212 is a wasteful number, since it uses less digits than its factorization.

66715716600212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089672 (or 4089670 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 66715716600212 in words is "sixty-six trillion, seven hundred fifteen billion, seven hundred sixteen million, six hundred thousand, two hundred twelve".