66507056732 has 12 divisors (see below), whose sum is σ = 116392826760. Its totient is φ = 33251963376.

The previous prime is 66507056723. The next prime is 66507056743. The reversal of 66507056732 is 23765070566.

66507056732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292883 + ... + 467754.

It is an arithmetic number, because the mean of its divisors is an integer number (9699402230).

Almost surely, 2^66507056732 is an apocalyptic number.

It is an amenable number.

66507056732 is a deficient number, since it is larger than the sum of its proper divisors (49885770028).

66507056732 is a wasteful number, since it uses less digits than its factorization.

66507056732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782500 (or 782498 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 47.

The spelling of 66507056732 in words is "sixty-six billion, five hundred seven million, fifty-six thousand, seven hundred thirty-two".