999795568379 has 4 divisors (see below), whose sum is σ = 999855478176. Its totient is φ = 999735658584.

The previous prime is 999795568361. The next prime is 999795568381. The reversal of 999795568379 is 973865597999.

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

It is a cyclic number.

It is not a de Polignac number, because 999795568379 - 2¹⁶ = 999795502843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999795568379.

It is not an unprimeable number, because it can be changed into a prime (999795568399) 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, 29929859 + ... + 29963244.

It is an arithmetic number, because the mean of its divisors is an integer number (249963869544).

Almost surely, 2^999795568379 is an apocalyptic number.

999795568379 is a deficient number, since it is larger than the sum of its proper divisors (59909797).

999795568379 is a wasteful number, since it uses less digits than its factorization.

999795568379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59909796.

The product of its digits is 10416243600, while the sum is 86.

The spelling of 999795568379 in words is "nine hundred ninety-nine billion, seven hundred ninety-five million, five hundred sixty-eight thousand, three hundred seventy-nine".