199122686624 has 24 divisors (see below), whose sum is σ = 392434205940. Its totient is φ = 99456856576.

The previous prime is 199122686603. The next prime is 199122686681. The reversal of 199122686624 is 426686221991.

199122686624 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 177493690000 + 21628996624 = 421300^2 + 147068^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 199122686624.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3234239 + ... + 3295230.

Almost surely, 2^199122686624 is an apocalyptic number.

It is an amenable number.

199122686624 is a deficient number, since it is larger than the sum of its proper divisors (193311519316).

199122686624 is an equidigital number, since it uses as much as digits as its factorization.

199122686624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6530432 (or 6530424 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 56.

The spelling of 199122686624 in words is "one hundred ninety-nine billion, one hundred twenty-two million, six hundred eighty-six thousand, six hundred twenty-four".