66756254312 has 16 divisors (see below), whose sum is σ = 136546884000. Its totient is φ = 30343751920.

The previous prime is 66756254303. The next prime is 66756254321. The reversal of 66756254312 is 21345265766.

It is an interprime number because it is at equal distance from previous prime (66756254303) and next prime (66756254321).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379296812 + ... + 379296987.

It is an arithmetic number, because the mean of its divisors is an integer number (8534180250).

Almost surely, 2^66756254312 is an apocalyptic number.

It is an amenable number.

66756254312 is an abundant number, since it is smaller than the sum of its proper divisors (69790629688).

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

66756254312 is a wasteful number, since it uses less digits than its factorization.

66756254312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758593816 (or 758593812 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 47.

The spelling of 66756254312 in words is "sixty-six billion, seven hundred fifty-six million, two hundred fifty-four thousand, three hundred twelve".