666222832251 has 8 divisors (see below), whose sum is σ = 986996788560. Its totient is φ = 444148554816.

The previous prime is 666222832243. The next prime is 666222832309. The reversal of 666222832251 is 152238222666.

It is not a de Polignac number, because 666222832251 - 2³ = 666222832243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666222832197 and 666222832206.

It is not an unprimeable number, because it can be changed into a prime (666222839251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12337459830 + ... + 12337459883.

It is an arithmetic number, because the mean of its divisors is an integer number (123374598570).

Almost surely, 2^666222832251 is an apocalyptic number.

666222832251 is a deficient number, since it is larger than the sum of its proper divisors (320773956309).

666222832251 is a wasteful number, since it uses less digits than its factorization.

666222832251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24674919722 (or 24674919716 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 666222832251 in words is "six hundred sixty-six billion, two hundred twenty-two million, eight hundred thirty-two thousand, two hundred fifty-one".