85457031408 has 120 divisors (see below), whose sum is σ = 273400358400. Its totient is φ = 24409729152.

The previous prime is 85457031377. The next prime is 85457031421. The reversal of 85457031408 is 80413075458.

85457031408 is a `hidden beast` number, since 8 + 5 + 4 + 570 + 31 + 40 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4707373 + ... + 4725491.

It is an arithmetic number, because the mean of its divisors is an integer number (2278336320).

Almost surely, 2^85457031408 is an apocalyptic number.

It is an amenable number.

85457031408 is an abundant number, since it is smaller than the sum of its proper divisors (187943326992).

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

85457031408 is a wasteful number, since it uses less digits than its factorization.

85457031408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22819 (or 22810 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 85457031408 in words is "eighty-five billion, four hundred fifty-seven million, thirty-one thousand, four hundred eight".