66431164700 has 36 divisors (see below), whose sum is σ = 144233080992. Its totient is φ = 26558188800.

The previous prime is 66431164687. The next prime is 66431164711. The reversal of 66431164700 is 746113466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9572 + ... + 364628.

It is an arithmetic number, because the mean of its divisors is an integer number (4006474472).

Almost surely, 2^66431164700 is an apocalyptic number.

It is an amenable number.

66431164700 is an abundant number, since it is smaller than the sum of its proper divisors (77801916292).

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

66431164700 is a wasteful number, since it uses less digits than its factorization.

66431164700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356942 (or 356935 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 66431164700 in words is "sixty-six billion, four hundred thirty-one million, one hundred sixty-four thousand, seven hundred".