66924326625 has 64 divisors (see below), whose sum is σ = 121447173120. Its totient is φ = 32530118400.

The previous prime is 66924326587. The next prime is 66924326647. The reversal of 66924326625 is 52662342966.

It is a de Polignac number, because none of the positive numbers 2^k-66924326625 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 298239 + ... + 472011.

It is an arithmetic number, because the mean of its divisors is an integer number (1897612080).

Almost surely, 2^66924326625 is an apocalyptic number.

66924326625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66924326625 is a deficient number, since it is larger than the sum of its proper divisors (54522846495).

66924326625 is a wasteful number, since it uses less digits than its factorization.

66924326625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173883 (or 173873 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 51.

The spelling of 66924326625 in words is "sixty-six billion, nine hundred twenty-four million, three hundred twenty-six thousand, six hundred twenty-five".