16311113665 has 32 divisors (see below), whose sum is σ = 25464139776. Its totient is φ = 9725876160.

The previous prime is 16311113657. The next prime is 16311113669. The reversal of 16311113665 is 56631111361.

It is not a de Polignac number, because 16311113665 - 2³ = 16311113657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16311113665.

It is not an unprimeable number, because it can be changed into a prime (16311113669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 912157 + ... + 929866.

It is an arithmetic number, because the mean of its divisors is an integer number (795754368).

Almost surely, 2^16311113665 is an apocalyptic number.

It is an amenable number.

16311113665 is a deficient number, since it is larger than the sum of its proper divisors (9153026111).

16311113665 is a wasteful number, since it uses less digits than its factorization.

16311113665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842069.

The product of its digits is 9720, while the sum is 34.

The spelling of 16311113665 in words is "sixteen billion, three hundred eleven million, one hundred thirteen thousand, six hundred sixty-five".