85623311413 has 4 divisors (see below), whose sum is σ = 85623978028. Its totient is φ = 85622644800.

The previous prime is 85623311377. The next prime is 85623311419. The reversal of 85623311413 is 31411332658.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 35125131889 + 50498179524 = 187417^2 + 224718^2 .

It is a cyclic number.

It is not a de Polignac number, because 85623311413 - 2²⁹ = 85086440501 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 (85623311419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72738 + ... + 420163.

It is an arithmetic number, because the mean of its divisors is an integer number (21405994507).

Almost surely, 2^85623311413 is an apocalyptic number.

It is an amenable number.

85623311413 is a deficient number, since it is larger than the sum of its proper divisors (666615).

85623311413 is a wasteful number, since it uses less digits than its factorization.

85623311413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666614.

The product of its digits is 51840, while the sum is 37.

The spelling of 85623311413 in words is "eighty-five billion, six hundred twenty-three million, three hundred eleven thousand, four hundred thirteen".