85639702745 has 16 divisors (see below), whose sum is σ = 104979691008. Its totient is φ = 67037772480.

The previous prime is 85639702721. The next prime is 85639702769. The reversal of 85639702745 is 54720793658.

It is an interprime number because it is at equal distance from previous prime (85639702721) and next prime (85639702769).

It is not a de Polignac number, because 85639702745 - 2²⁰ = 85638654169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 974735 + ... + 1058955.

It is an arithmetic number, because the mean of its divisors is an integer number (6561230688).

Almost surely, 2^85639702745 is an apocalyptic number.

It is an amenable number.

85639702745 is a deficient number, since it is larger than the sum of its proper divisors (19339988263).

85639702745 is a wasteful number, since it uses less digits than its factorization.

85639702745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88600.

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 85639702745 in words is "eighty-five billion, six hundred thirty-nine million, seven hundred two thousand, seven hundred forty-five".