66625319375 has 10 divisors (see below), whose sum is σ = 83254999872. Its totient is φ = 53300255000.

The previous prime is 66625319363. The next prime is 66625319401. The reversal of 66625319375 is 57391352666.

It is not a de Polignac number, because 66625319375 - 2³² = 62330352079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 53299631 + ... + 53300880.

Almost surely, 2^66625319375 is an apocalyptic number.

66625319375 is a deficient number, since it is larger than the sum of its proper divisors (16629680497).

66625319375 is an equidigital number, since it uses as much as digits as its factorization.

66625319375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106600531 (or 106600516 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 53.

The spelling of 66625319375 in words is "sixty-six billion, six hundred twenty-five million, three hundred nineteen thousand, three hundred seventy-five".