666013710072 has 32 divisors (see below), whose sum is σ = 1665078457680. Its totient is φ = 221998679040.

The previous prime is 666013710031. The next prime is 666013710073. The reversal of 666013710072 is 270017310666.

It is a self number, because there is not a number n which added to its sum of digits gives 666013710072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666013710073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607918 + ... + 1304450.

Almost surely, 2^666013710072 is an apocalyptic number.

It is an amenable number.

666013710072 is an abundant number, since it is smaller than the sum of its proper divisors (999064747608).

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

666013710072 is a wasteful number, since it uses less digits than its factorization.

666013710072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736383 (or 736379 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 666013710072 in words is "six hundred sixty-six billion, thirteen million, seven hundred ten thousand, seventy-two".