16666500090 has 64 divisors (see below), whose sum is σ = 40222241280. Its totient is φ = 4419717120.

The previous prime is 16666500083. The next prime is 16666500119. The reversal of 16666500090 is 9000566661.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8007850 + ... + 8009930.

It is an arithmetic number, because the mean of its divisors is an integer number (628472520).

Almost surely, 2^16666500090 is an apocalyptic number.

16666500090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16666500090 is an abundant number, since it is smaller than the sum of its proper divisors (23555741190).

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

16666500090 is a wasteful number, since it uses less digits than its factorization.

16666500090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447.

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 16666500090 in words is "sixteen billion, six hundred sixty-six million, five hundred thousand, ninety".