16311501994 has 16 divisors (see below), whose sum is σ = 25443486720. Its totient is φ = 7833285040.

The previous prime is 16311501977. The next prime is 16311502049. The reversal of 16311501994 is 49910511361.

16311501994 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 725134 + ... + 747289.

It is an arithmetic number, because the mean of its divisors is an integer number (1590217920).

Almost surely, 2^16311501994 is an apocalyptic number.

16311501994 is a deficient number, since it is larger than the sum of its proper divisors (9131984726).

16311501994 is a wasteful number, since it uses less digits than its factorization.

16311501994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472645.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 16311501994 in words is "sixteen billion, three hundred eleven million, five hundred one thousand, nine hundred ninety-four".