18401113807908 has 24 divisors (see below), whose sum is σ = 46238696235648. Its totient is φ = 5661881171616.

The previous prime is 18401113807907. The next prime is 18401113807931. The reversal of 18401113807908 is 80970831110481.

It is not an unprimeable number, because it can be changed into a prime (18401113807907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58977928716 + ... + 58977929027.

It is an arithmetic number, because the mean of its divisors is an integer number (1926612343152).

Almost surely, 2^{18401113807908} is an apocalyptic number.

It is an amenable number.

18401113807908 is an abundant number, since it is smaller than the sum of its proper divisors (27837582427740).

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

18401113807908 is a wasteful number, since it uses less digits than its factorization.

18401113807908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117955857763 (or 117955857761 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 51.

The spelling of 18401113807908 in words is "eighteen trillion, four hundred one billion, one hundred thirteen million, eight hundred seven thousand, nine hundred eight".