66967634625 has 64 divisors (see below), whose sum is σ = 118065123072. Its totient is φ = 33593472000.

The previous prime is 66967634599. The next prime is 66967634633. The reversal of 66967634625 is 52643676966.

It is not a de Polignac number, because 66967634625 - 2¹⁶ = 66967569089 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15367947 + ... + 15372303.

It is an arithmetic number, because the mean of its divisors is an integer number (1844767548).

Almost surely, 2^66967634625 is an apocalyptic number.

It is an amenable number.

66967634625 is a deficient number, since it is larger than the sum of its proper divisors (51097488447).

66967634625 is a wasteful number, since it uses less digits than its factorization.

66967634625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6803 (or 6793 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 60.

The spelling of 66967634625 in words is "sixty-six billion, nine hundred sixty-seven million, six hundred thirty-four thousand, six hundred twenty-five".