85685372410507 has 4 divisors (see below), whose sum is σ = 85690918045816. Its totient is φ = 85679826775200.

The previous prime is 85685372410453. The next prime is 85685372410523. The reversal of 85685372410507 is 70501427358658.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85685372410507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85685372410577) 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, 2772794478 + ... + 2772825379.

It is an arithmetic number, because the mean of its divisors is an integer number (21422729511454).

Almost surely, 2^{85685372410507} is an apocalyptic number.

85685372410507 is a deficient number, since it is larger than the sum of its proper divisors (5545635309).

85685372410507 is a wasteful number, since it uses less digits than its factorization.

85685372410507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5545635308.

The product of its (nonzero) digits is 56448000, while the sum is 61.

The spelling of 85685372410507 in words is "eighty-five trillion, six hundred eighty-five billion, three hundred seventy-two million, four hundred ten thousand, five hundred seven".