66147322684 has 24 divisors (see below), whose sum is σ = 123519524240. Its totient is φ = 30903721344.

The previous prime is 66147322667. The next prime is 66147322753. The reversal of 66147322684 is 48622374166.

66147322684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66147322684² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5955819 + ... + 5966914.

Almost surely, 2^66147322684 is an apocalyptic number.

It is an amenable number.

66147322684 is a deficient number, since it is larger than the sum of its proper divisors (57372201556).

66147322684 is a wasteful number, since it uses less digits than its factorization.

66147322684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11922829 (or 11922827 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 49.

The spelling of 66147322684 in words is "sixty-six billion, one hundred forty-seven million, three hundred twenty-two thousand, six hundred eighty-four".