85868131720404 has 24 divisors (see below), whose sum is σ = 218573426197728. Its totient is φ = 26020645975840.

The previous prime is 85868131720361. The next prime is 85868131720409. The reversal of 85868131720404 is 40402713186858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85868131720409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325258074567 + ... + 325258074830.

It is an arithmetic number, because the mean of its divisors is an integer number (9107226091572).

Almost surely, 2^{85868131720404} is an apocalyptic number.

It is an amenable number.

85868131720404 is an abundant number, since it is smaller than the sum of its proper divisors (132705294477324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85868131720404 is a wasteful number, since it uses less digits than its factorization.

85868131720404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650516149415 (or 650516149413 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 57.

The spelling of 85868131720404 in words is "eighty-five trillion, eight hundred sixty-eight billion, one hundred thirty-one million, seven hundred twenty thousand, four hundred four".