85117555884 has 24 divisors (see below), whose sum is σ = 210290432688. Its totient is φ = 26703546880.

The previous prime is 85117555837. The next prime is 85117555889. The reversal of 85117555884 is 48855571158.

It is not an unprimeable number, because it can be changed into a prime (85117555889) 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, 208621257 + ... + 208621664.

It is an arithmetic number, because the mean of its divisors is an integer number (8762101362).

Almost surely, 2^85117555884 is an apocalyptic number.

It is an amenable number.

85117555884 is an abundant number, since it is smaller than the sum of its proper divisors (125172876804).

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

85117555884 is a wasteful number, since it uses less digits than its factorization.

85117555884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417242945 (or 417242943 counting only the distinct ones).

The product of its digits is 8960000, while the sum is 57.

The spelling of 85117555884 in words is "eighty-five billion, one hundred seventeen million, five hundred fifty-five thousand, eight hundred eighty-four".