66383896976 has 10 divisors (see below), whose sum is σ = 128618800422. Its totient is φ = 33191948480.

The previous prime is 66383896919. The next prime is 66383896991. The reversal of 66383896976 is 67969838366.

66383896976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 66318610576 + 65286400 = 257524^2 + 8080^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2074496765 + ... + 2074496796.

Almost surely, 2^66383896976 is an apocalyptic number.

It is an amenable number.

66383896976 is a deficient number, since it is larger than the sum of its proper divisors (62234903446).

66383896976 is a wasteful number, since it uses less digits than its factorization.

66383896976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148993569 (or 4148993563 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 71.

The spelling of 66383896976 in words is "sixty-six billion, three hundred eighty-three million, eight hundred ninety-six thousand, nine hundred seventy-six".