18662399995 has 16 divisors (see below), whose sum is σ = 24037058880. Its totient is φ = 13859195904.

The previous prime is 18662399983. The next prime is 18662400007. The reversal of 18662399995 is 59999326681.

It is an interprime number because it is at equal distance from previous prime (18662399983) and next prime (18662400007).

It is a cyclic number.

It is not a de Polignac number, because 18662399995 - 2²⁵ = 18628845563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18662399995.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1497615 + ... + 1510024.

It is an arithmetic number, because the mean of its divisors is an integer number (1502316180).

Almost surely, 2^18662399995 is an apocalyptic number.

18662399995 is a deficient number, since it is larger than the sum of its proper divisors (5374658885).

18662399995 is a wasteful number, since it uses less digits than its factorization.

18662399995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007734.

The product of its digits is 56687040, while the sum is 67.

The spelling of 18662399995 in words is "eighteen billion, six hundred sixty-two million, three hundred ninety-nine thousand, nine hundred ninety-five".