66375856392 has 32 divisors (see below), whose sum is σ = 165948427680. Its totient is φ = 22124113920.

The previous prime is 66375856369. The next prime is 66375856441. The reversal of 66375856392 is 29365857366.

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 7 ways as a sum of consecutive naturals, for example, 472467 + ... + 596637.

It is an arithmetic number, because the mean of its divisors is an integer number (5185888365).

Almost surely, 2^66375856392 is an apocalyptic number.

It is an amenable number.

66375856392 is an abundant number, since it is smaller than the sum of its proper divisors (99572571288).

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

66375856392 is a wasteful number, since it uses less digits than its factorization.

66375856392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146453 (or 146449 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 60.

The spelling of 66375856392 in words is "sixty-six billion, three hundred seventy-five million, eight hundred fifty-six thousand, three hundred ninety-two".