86408991826 has 16 divisors (see below), whose sum is σ = 132782985720. Its totient is φ = 42148126720.

The previous prime is 86408991821. The next prime is 86408991833. The reversal of 86408991826 is 62819980468.

It can be written as a sum of positive squares in 4 ways, for example, as 75820376025 + 10588615801 = 275355^2 + 102901^2 .

It is not an unprimeable number, because it can be changed into a prime (86408991821) 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, 2499330 + ... + 2533666.

Almost surely, 2^86408991826 is an apocalyptic number.

86408991826 is a deficient number, since it is larger than the sum of its proper divisors (46373993894).

86408991826 is a wasteful number, since it uses less digits than its factorization.

86408991826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65069.

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 86408991826 in words is "eighty-six billion, four hundred eight million, nine hundred ninety-one thousand, eight hundred twenty-six".