666846508032 has 88 divisors (see below), whose sum is σ = 1974876820800. Its totient is φ = 222282160128.

The previous prime is 666846508007. The next prime is 666846508039. The reversal of 666846508032 is 230805648666.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 666846508032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666846508039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12031932 + ... + 12087227.

Almost surely, 2^666846508032 is an apocalyptic number.

It is an amenable number.

666846508032 is an abundant number, since it is smaller than the sum of its proper divisors (1308030312768).

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

666846508032 is a wasteful number, since it uses less digits than its factorization.

666846508032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24119188 (or 24119164 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 666846508032 in words is "six hundred sixty-six billion, eight hundred forty-six million, five hundred eight thousand, thirty-two".