85939316123 has 4 divisors (see below), whose sum is σ = 85949571240. Its totient is φ = 85929061008.

The previous prime is 85939315883. The next prime is 85939316149. The reversal of 85939316123 is 32161393958.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32161393958 = 2 ⋅16080696979.

It is a cyclic number.

It is not a de Polignac number, because 85939316123 - 2⁸ = 85939315867 is a prime.

It is a super-2 number, since 2×85939316123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85939316173) 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, 5114978 + ... + 5131751.

It is an arithmetic number, because the mean of its divisors is an integer number (21487392810).

Almost surely, 2^85939316123 is an apocalyptic number.

85939316123 is a deficient number, since it is larger than the sum of its proper divisors (10255117).

85939316123 is a wasteful number, since it uses less digits than its factorization.

85939316123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10255116.

The product of its digits is 1049760, while the sum is 50.

The spelling of 85939316123 in words is "eighty-five billion, nine hundred thirty-nine million, three hundred sixteen thousand, one hundred twenty-three".