66922144780 has 12 divisors (see below), whose sum is σ = 140536504080. Its totient is φ = 26768857904.

The previous prime is 66922144769. The next prime is 66922144799. The reversal of 66922144780 is 8744122966.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673053600 + ... + 1673053639.

It is an arithmetic number, because the mean of its divisors is an integer number (11711375340).

Almost surely, 2^66922144780 is an apocalyptic number.

It is an amenable number.

66922144780 is an abundant number, since it is smaller than the sum of its proper divisors (73614359300).

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

66922144780 is a wasteful number, since it uses less digits than its factorization.

66922144780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346107248 (or 3346107246 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 66922144780 in words is "sixty-six billion, nine hundred twenty-two million, one hundred forty-four thousand, seven hundred eighty".