666930803122 has 4 divisors (see below), whose sum is σ = 1000396204686. Its totient is φ = 333465401560.

The previous prime is 666930803069. The next prime is 666930803137. The reversal of 666930803122 is 221308039666.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 549645787161 + 117285015961 = 741381^2 + 342469^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166732700779 + ... + 166732700782.

Almost surely, 2^666930803122 is an apocalyptic number.

666930803122 is a deficient number, since it is larger than the sum of its proper divisors (333465401564).

666930803122 is a wasteful number, since it uses less digits than its factorization.

666930803122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333465401563.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 666930803122 in words is "six hundred sixty-six billion, nine hundred thirty million, eight hundred three thousand, one hundred twenty-two".