9818111613865 has 16 divisors (see below), whose sum is σ = 11807684583552. Its totient is φ = 7837207830144.

The previous prime is 9818111613851. The next prime is 9818111613889. The reversal of 9818111613865 is 5683161118189.

It is a cyclic number.

It is not a de Polignac number, because 9818111613865 - 2⁵ = 9818111613833 is a prime.

It is a Duffinian number.

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, 2958862 + ... + 5328328.

It is an arithmetic number, because the mean of its divisors is an integer number (737980286472).

Almost surely, 2^{9818111613865} is an apocalyptic number.

It is an amenable number.

9818111613865 is a deficient number, since it is larger than the sum of its proper divisors (1989572969687).

9818111613865 is a wasteful number, since it uses less digits than its factorization.

9818111613865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371296.

The product of its digits is 2488320, while the sum is 58.

The spelling of 9818111613865 in words is "nine trillion, eight hundred eighteen billion, one hundred eleven million, six hundred thirteen thousand, eight hundred sixty-five".