85979771430 has 64 divisors (see below), whose sum is σ = 235865502720. Its totient is φ = 19649579904.

The previous prime is 85979771411. The next prime is 85979771453. The reversal of 85979771430 is 3417797958.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1577392 + ... + 1630988.

It is an arithmetic number, because the mean of its divisors is an integer number (3685398480).

Almost surely, 2^85979771430 is an apocalyptic number.

85979771430 is an abundant number, since it is smaller than the sum of its proper divisors (149885731290).

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

85979771430 is a wasteful number, since it uses less digits than its factorization.

85979771430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61253.

The product of its (nonzero) digits is 13335840, while the sum is 60.

The spelling of 85979771430 in words is "eighty-five billion, nine hundred seventy-nine million, seven hundred seventy-one thousand, four hundred thirty".