199122686627 has 4 divisors (see below), whose sum is σ = 199152623040. Its totient is φ = 199092750216.

The previous prime is 199122686603. The next prime is 199122686681. The reversal of 199122686627 is 726686221991.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199122686627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199122686027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14958227 + ... + 14971532.

It is an arithmetic number, because the mean of its divisors is an integer number (49788155760).

Almost surely, 2^199122686627 is an apocalyptic number.

199122686627 is a deficient number, since it is larger than the sum of its proper divisors (29936413).

199122686627 is an equidigital number, since it uses as much as digits as its factorization.

199122686627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29936412.

The product of its digits is 7838208, while the sum is 59.

The spelling of 199122686627 in words is "one hundred ninety-nine billion, one hundred twenty-two million, six hundred eighty-six thousand, six hundred twenty-seven".