85817134739 has 16 divisors (see below), whose sum is σ = 101675059200. Its totient is φ = 70879164480.

The previous prime is 85817134723. The next prime is 85817134751. The reversal of 85817134739 is 93743171858.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85817134739 - 2⁴ = 85817134723 is a prime.

It is a super-2 number, since 2×85817134739² (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 (85817134709) 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, 798089 + ... + 899210.

It is an arithmetic number, because the mean of its divisors is an integer number (6354691200).

Almost surely, 2^85817134739 is an apocalyptic number.

85817134739 is a deficient number, since it is larger than the sum of its proper divisors (15857924461).

85817134739 is a wasteful number, since it uses less digits than its factorization.

85817134739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697570.

The product of its digits is 5080320, while the sum is 56.

The spelling of 85817134739 in words is "eighty-five billion, eight hundred seventeen million, one hundred thirty-four thousand, seven hundred thirty-nine".