16495613817 has 4 divisors (see below), whose sum is σ = 21994151760. Its totient is φ = 10997075876.

The previous prime is 16495613789. The next prime is 16495613851. The reversal of 16495613817 is 71831659461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16495613817 - 2¹⁶ = 16495548281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16495613817.

It is not an unprimeable number, because it can be changed into a prime (16495683817) 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, 2749268967 + ... + 2749268972.

It is an arithmetic number, because the mean of its divisors is an integer number (5498537940).

Almost surely, 2^16495613817 is an apocalyptic number.

It is an amenable number.

16495613817 is a deficient number, since it is larger than the sum of its proper divisors (5498537943).

16495613817 is an equidigital number, since it uses as much as digits as its factorization.

16495613817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498537942.

The product of its digits is 1088640, while the sum is 51.

The spelling of 16495613817 in words is "sixteen billion, four hundred ninety-five million, six hundred thirteen thousand, eight hundred seventeen".