66466500464 has 80 divisors (see below), whose sum is σ = 158548518912. Its totient is φ = 26285900544.

The previous prime is 66466500433. The next prime is 66466500469. The reversal of 66466500464 is 46400566466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66466500469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6347297 + ... + 6357759.

Almost surely, 2^66466500464 is an apocalyptic number.

It is an amenable number.

66466500464 is an abundant number, since it is smaller than the sum of its proper divisors (92082018448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66466500464 is a wasteful number, since it uses less digits than its factorization.

66466500464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14854 (or 14848 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 66466500464 in words is "sixty-six billion, four hundred sixty-six million, five hundred thousand, four hundred sixty-four".