85823712408 has 32 divisors (see below), whose sum is σ = 245210607360. Its totient is φ = 24521060640.

The previous prime is 85823712383. The next prime is 85823712421. The reversal of 85823712408 is 80421732858.

It is a super-2 number, since 2×85823712408² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255427548 + ... + 255427883.

It is an arithmetic number, because the mean of its divisors is an integer number (7662831480).

Almost surely, 2^85823712408 is an apocalyptic number.

It is an amenable number.

85823712408 is an abundant number, since it is smaller than the sum of its proper divisors (159386894952).

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

85823712408 is a wasteful number, since it uses less digits than its factorization.

85823712408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510855447 (or 510855443 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 85823712408 in words is "eighty-five billion, eight hundred twenty-three million, seven hundred twelve thousand, four hundred eight".