85623473838 has 64 divisors (see below), whose sum is σ = 196624926720. Its totient is φ = 24349766400.

The previous prime is 85623473783. The next prime is 85623473911. The reversal of 85623473838 is 83837432658.

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, 13985418 + ... + 13991538.

It is an arithmetic number, because the mean of its divisors is an integer number (3072264480).

Almost surely, 2^85623473838 is an apocalyptic number.

85623473838 is an abundant number, since it is smaller than the sum of its proper divisors (111001452882).

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

85623473838 is a wasteful number, since it uses less digits than its factorization.

85623473838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7633.

The product of its digits is 23224320, while the sum is 57.

The spelling of 85623473838 in words is "eighty-five billion, six hundred twenty-three million, four hundred seventy-three thousand, eight hundred thirty-eight".