885639115816 has 64 divisors (see below), whose sum is σ = 2109711098880. Its totient is φ = 339060695040.

The previous prime is 885639115807. The next prime is 885639115831. The reversal of 885639115816 is 618511936588.

It is a super-2 number, since 2×885639115816² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19599001 + ... + 19644136.

It is an arithmetic number, because the mean of its divisors is an integer number (32964235920).

Almost surely, 2^885639115816 is an apocalyptic number.

It is an amenable number.

885639115816 is an abundant number, since it is smaller than the sum of its proper divisors (1224071983064).

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

885639115816 is a wasteful number, since it uses less digits than its factorization.

885639115816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39243194 (or 39243190 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 61.

The spelling of 885639115816 in words is "eight hundred eighty-five billion, six hundred thirty-nine million, one hundred fifteen thousand, eight hundred sixteen".