18413451031108 has 12 divisors (see below), whose sum is σ = 36826902062272. Its totient is φ = 7891479013320.

The previous prime is 18413451031039. The next prime is 18413451031111. The reversal of 18413451031108 is 80113015431481.

It is a happy number.

18413451031108 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328811625528 + ... + 328811625583.

Almost surely, 2^{18413451031108} is an apocalyptic number.

It is an amenable number.

18413451031108 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18413451031108 is a wasteful number, since it uses less digits than its factorization.

18413451031108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657623251122 (or 657623251120 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

Adding to 18413451031108 its reverse (80113015431481), we get a palindrome (98526466462589).

The spelling of 18413451031108 in words is "eighteen trillion, four hundred thirteen billion, four hundred fifty-one million, thirty-one thousand, one hundred eight".