16311574493 has 8 divisors (see below), whose sum is σ = 17025763200. Its totient is φ = 15597801648.

The previous prime is 16311574459. The next prime is 16311574501. The reversal of 16311574493 is 39447511361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16311574493 - 2²² = 16307380189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16311574403) 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, 22433 + ... + 182006.

It is an arithmetic number, because the mean of its divisors is an integer number (2128220400).

Almost surely, 2^16311574493 is an apocalyptic number.

It is an amenable number.

16311574493 is a deficient number, since it is larger than the sum of its proper divisors (714188707).

16311574493 is a wasteful number, since it uses less digits than its factorization.

16311574493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207931.

The product of its digits is 272160, while the sum is 44.

The spelling of 16311574493 in words is "sixteen billion, three hundred eleven million, five hundred seventy-four thousand, four hundred ninety-three".