809299115423 has 16 divisors (see below), whose sum is σ = 877112169120. Its totient is φ = 743742590976.

The previous prime is 809299115369. The next prime is 809299115467. The reversal of 809299115423 is 324511992908.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 809299115423 - 2²² = 809294921119 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 (809299115473) 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, 2141861 + ... + 2491217.

It is an arithmetic number, because the mean of its divisors is an integer number (54819510570).

Almost surely, 2^809299115423 is an apocalyptic number.

809299115423 is a deficient number, since it is larger than the sum of its proper divisors (67813053697).

809299115423 is a wasteful number, since it uses less digits than its factorization.

809299115423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352586.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 809299115423 in words is "eight hundred nine billion, two hundred ninety-nine million, one hundred fifteen thousand, four hundred twenty-three".