85444558975 has 96 divisors (see below), whose sum is σ = 115480894464. Its totient is φ = 62559129600.

The previous prime is 85444558963. The next prime is 85444558999. The reversal of 85444558975 is 57985544458.

It is not a de Polignac number, because 85444558975 - 2⁵ = 85444558943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 242052399 + ... + 242052751.

It is an arithmetic number, because the mean of its divisors is an integer number (1202925984).

Almost surely, 2^85444558975 is an apocalyptic number.

85444558975 is a deficient number, since it is larger than the sum of its proper divisors (30036335489).

85444558975 is a wasteful number, since it uses less digits than its factorization.

85444558975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 612 counting only the distinct ones).

The product of its digits is 161280000, while the sum is 64.

The spelling of 85444558975 in words is "eighty-five billion, four hundred forty-four million, five hundred fifty-eight thousand, nine hundred seventy-five".