66389562886 has 16 divisors (see below), whose sum is σ = 102892366368. Its totient is φ = 32109750400.

The previous prime is 66389562857. The next prime is 66389562913. The reversal of 66389562886 is 68826598366.

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, 4403155 + ... + 4418206.

It is an arithmetic number, because the mean of its divisors is an integer number (6430772898).

Almost surely, 2^66389562886 is an apocalyptic number.

66389562886 is a deficient number, since it is larger than the sum of its proper divisors (36502803482).

66389562886 is a wasteful number, since it uses less digits than its factorization.

66389562886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8821487.

The product of its digits is 179159040, while the sum is 67.

The spelling of 66389562886 in words is "sixty-six billion, three hundred eighty-nine million, five hundred sixty-two thousand, eight hundred eighty-six".