85939375517 has 4 divisors (see below), whose sum is σ = 85939969920. Its totient is φ = 85938781116.

The previous prime is 85939375499. The next prime is 85939375519. The reversal of 85939375517 is 71557393958.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 85939375517 - 2⁶ = 85939375453 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 85939375517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85939375519) 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, 75284 + ... + 421362.

It is an arithmetic number, because the mean of its divisors is an integer number (21484992480).

Almost surely, 2^85939375517 is an apocalyptic number.

It is an amenable number.

85939375517 is a deficient number, since it is larger than the sum of its proper divisors (594403).

85939375517 is a wasteful number, since it uses less digits than its factorization.

85939375517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594402.

The product of its digits is 35721000, while the sum is 62.

The spelling of 85939375517 in words is "eighty-five billion, nine hundred thirty-nine million, three hundred seventy-five thousand, five hundred seventeen".