666849230090 has 32 divisors (see below), whose sum is σ = 1235029251456. Its totient is φ = 259096985280.

The previous prime is 666849230039. The next prime is 666849230111. The reversal of 666849230090 is 90032948666.

It is a super-2 number, since 2×666849230090² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4206182 + ... + 4361841.

It is an arithmetic number, because the mean of its divisors is an integer number (38594664108).

Almost surely, 2^666849230090 is an apocalyptic number.

666849230090 is a deficient number, since it is larger than the sum of its proper divisors (568180021366).

666849230090 is a wasteful number, since it uses less digits than its factorization.

666849230090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8568254.

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 666849230090 in words is "six hundred sixty-six billion, eight hundred forty-nine million, two hundred thirty thousand, ninety".