16662812793 has 16 divisors (see below), whose sum is σ = 25512441600. Its totient is φ = 9567164880.

The previous prime is 16662812791. The next prime is 16662812809. The reversal of 16662812793 is 39721826661.

It is not a de Polignac number, because 16662812793 - 2¹ = 16662812791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16662812791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13287103 + ... + 13288356.

It is an arithmetic number, because the mean of its divisors is an integer number (1594527600).

Almost surely, 2^16662812793 is an apocalyptic number.

It is an amenable number.

16662812793 is a deficient number, since it is larger than the sum of its proper divisors (8849628807).

16662812793 is a wasteful number, since it uses less digits than its factorization.

16662812793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26575492.

The product of its digits is 1306368, while the sum is 51.

The spelling of 16662812793 in words is "sixteen billion, six hundred sixty-two million, eight hundred twelve thousand, seven hundred ninety-three".