199922750665 has 16 divisors (see below), whose sum is σ = 275491638720. Its totient is φ = 137745817920.

The previous prime is 199922750647. The next prime is 199922750681. The reversal of 199922750665 is 566057229991.

It is not a de Polignac number, because 199922750665 - 2⁵ = 199922750633 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95655774 + ... + 95657863.

It is an arithmetic number, because the mean of its divisors is an integer number (17218227420).

Almost surely, 2^199922750665 is an apocalyptic number.

It is an amenable number.

199922750665 is a deficient number, since it is larger than the sum of its proper divisors (75568888055).

199922750665 is a wasteful number, since it uses less digits than its factorization.

199922750665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191313672.

The product of its (nonzero) digits is 18370800, while the sum is 61.

The spelling of 199922750665 in words is "one hundred ninety-nine billion, nine hundred twenty-two million, seven hundred fifty thousand, six hundred sixty-five".