16039909807 has 4 divisors (see below), whose sum is σ = 16242946720. Its totient is φ = 15836872896.

The previous prime is 16039909783. The next prime is 16039909817. The reversal of 16039909807 is 70890993061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16039909807 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 (16039909817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101518338 + ... + 101518495.

It is an arithmetic number, because the mean of its divisors is an integer number (4060736680).

Almost surely, 2^16039909807 is an apocalyptic number.

16039909807 is a deficient number, since it is larger than the sum of its proper divisors (203036913).

16039909807 is an equidigital number, since it uses as much as digits as its factorization.

16039909807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203036912.

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 16039909807 in words is "sixteen billion, thirty-nine million, nine hundred nine thousand, eight hundred seven".