85315883444 has 24 divisors (see below), whose sum is σ = 164457104448. Its totient is φ = 38403440640.

The previous prime is 85315883441. The next prime is 85315883449. The reversal of 85315883444 is 44438851358.

It is a super-2 number, since 2×85315883444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85315883441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9408077 + ... + 9417140.

It is an arithmetic number, because the mean of its divisors is an integer number (6852379352).

Almost surely, 2^85315883444 is an apocalyptic number.

It is an amenable number.

85315883444 is a deficient number, since it is larger than the sum of its proper divisors (79141221004).

85315883444 is a wasteful number, since it uses less digits than its factorization.

85315883444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18825335 (or 18825333 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 53.

The spelling of 85315883444 in words is "eighty-five billion, three hundred fifteen million, eight hundred eighty-three thousand, four hundred forty-four".