85715321899599 has 64 divisors (see below), whose sum is σ = 146626908825600. Its totient is φ = 48473815716864.

The previous prime is 85715321899591. The next prime is 85715321899619. The reversal of 85715321899599 is 99599812351758.

85715321899599 is a `hidden beast` number, since 8 + 5 + 7 + 1 + 5 + 3 + 2 + 18 + 9 + 9 + 599 = 666.

It is not a de Polignac number, because 85715321899599 - 2³ = 85715321899591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85715321899591) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1248204637 + ... + 1248273305.

It is an arithmetic number, because the mean of its divisors is an integer number (2291045450400).

Almost surely, 2^{85715321899599} is an apocalyptic number.

85715321899599 is a deficient number, since it is larger than the sum of its proper divisors (60911586926001).

85715321899599 is a wasteful number, since it uses less digits than its factorization.

85715321899599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136869 (or 136863 counting only the distinct ones).

The product of its digits is 2204496000, while the sum is 81.

The spelling of 85715321899599 in words is "eighty-five trillion, seven hundred fifteen billion, three hundred twenty-one million, eight hundred ninety-nine thousand, five hundred ninety-nine".