66707377667732 has 48 divisors (see below), whose sum is σ = 117175065840000. Its totient is φ = 33229099338624.

The previous prime is 66707377667683. The next prime is 66707377667809. The reversal of 66707377667732 is 23776677370766.

It is a self number, because there is not a number n which added to its sum of digits gives 66707377667732.

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, 2155381394 + ... + 2155412342.

It is an arithmetic number, because the mean of its divisors is an integer number (2441147205000).

Almost surely, 2^{66707377667732} is an apocalyptic number.

It is an amenable number.

66707377667732 is a deficient number, since it is larger than the sum of its proper divisors (50467688172268).

66707377667732 is a wasteful number, since it uses less digits than its factorization.

66707377667732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33408 (or 33406 counting only the distinct ones).

The product of its (nonzero) digits is 2744515872, while the sum is 74.

The spelling of 66707377667732 in words is "sixty-six trillion, seven hundred seven billion, three hundred seventy-seven million, six hundred sixty-seven thousand, seven hundred thirty-two".