66277466972 has 12 divisors (see below), whose sum is σ = 117886970376. Its totient is φ = 32595475440.

The previous prime is 66277466939. The next prime is 66277466989. The reversal of 66277466972 is 27966477266.

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, 135814238 + ... + 135814725.

It is an arithmetic number, because the mean of its divisors is an integer number (9823914198).

Almost surely, 2^66277466972 is an apocalyptic number.

It is an amenable number.

66277466972 is a deficient number, since it is larger than the sum of its proper divisors (51609503404).

66277466972 is a wasteful number, since it uses less digits than its factorization.

66277466972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271629028 (or 271629026 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 62.

The spelling of 66277466972 in words is "sixty-six billion, two hundred seventy-seven million, four hundred sixty-six thousand, nine hundred seventy-two".