18663882408365 has 8 divisors (see below), whose sum is σ = 22408257378528. Its totient is φ = 14923373601040.

The previous prime is 18663882408349. The next prime is 18663882408371. The reversal of 18663882408365 is 56380428836681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18663882408365 - 2⁴ = 18663882408349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18663882408295 and 18663882408304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966530087 + ... + 966549396.

It is an arithmetic number, because the mean of its divisors is an integer number (2801032172316).

Almost surely, 2^{18663882408365} is an apocalyptic number.

It is an amenable number.

18663882408365 is a deficient number, since it is larger than the sum of its proper divisors (3744374970163).

18663882408365 is a wasteful number, since it uses less digits than its factorization.

18663882408365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933081419.

The product of its (nonzero) digits is 318504960, while the sum is 68.

The spelling of 18663882408365 in words is "eighteen trillion, six hundred sixty-three billion, eight hundred eighty-two million, four hundred eight thousand, three hundred sixty-five".