18446500799 has 2 divisors, whose sum is σ = 18446500800. Its totient is φ = 18446500798.

The previous prime is 18446500781. The next prime is 18446500801. The reversal of 18446500799 is 99700564481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18446500799 - 2²⁴ = 18429723583 is a prime.

It is a Sophie Germain prime.

Together with 18446500801, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18446500799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18446500729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9223250399 + 9223250400.

It is an arithmetic number, because the mean of its divisors is an integer number (9223250400).

Almost surely, 2^18446500799 is an apocalyptic number.

18446500799 is a deficient number, since it is larger than the sum of its proper divisors (1).

18446500799 is an equidigital number, since it uses as much as digits as its factorization.

18446500799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 18446500799 in words is "eighteen billion, four hundred forty-six million, five hundred thousand, seven hundred ninety-nine".