20118447199 has 2 divisors, whose sum is σ = 20118447200. Its totient is φ = 20118447198.

The previous prime is 20118447137. The next prime is 20118447203. The reversal of 20118447199 is 99174481102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20118447199 - 2²⁵ = 20084892767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20118447799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10059223599 + 10059223600.

It is an arithmetic number, because the mean of its divisors is an integer number (10059223600).

Almost surely, 2^20118447199 is an apocalyptic number.

20118447199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20118447199 is an equidigital number, since it uses as much as digits as its factorization.

20118447199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 20118447199 in words is "twenty billion, one hundred eighteen million, four hundred forty-seven thousand, one hundred ninety-nine".