66826369992 has 32 divisors (see below), whose sum is σ = 175858869600. Its totient is φ = 21103064064.

The previous prime is 66826369933. The next prime is 66826370041. The reversal of 66826369992 is 29996362866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73274073 + ... + 73274984.

It is an arithmetic number, because the mean of its divisors is an integer number (5495589675).

Almost surely, 2^66826369992 is an apocalyptic number.

It is an amenable number.

66826369992 is an abundant number, since it is smaller than the sum of its proper divisors (109032499608).

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

66826369992 is a wasteful number, since it uses less digits than its factorization.

66826369992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146549085 (or 146549081 counting only the distinct ones).

The product of its digits is 90699264, while the sum is 66.

The spelling of 66826369992 in words is "sixty-six billion, eight hundred twenty-six million, three hundred sixty-nine thousand, nine hundred ninety-two".