85559111164540 has 96 divisors (see below), whose sum is σ = 203868330172416. Its totient is φ = 29924157922560.

The previous prime is 85559111164531. The next prime is 85559111164627. The reversal of 85559111164540 is 4546111195558.

It is a super-2 number, since 2×85559111164540² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68838156 + ... + 70070035.

It is an arithmetic number, because the mean of its divisors is an integer number (2123628439296).

Almost surely, 2^{85559111164540} is an apocalyptic number.

It is an amenable number.

85559111164540 is an abundant number, since it is smaller than the sum of its proper divisors (118309219007876).

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

85559111164540 is a wasteful number, since it uses less digits than its factorization.

85559111164540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138908339 (or 138908337 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 55.

The spelling of 85559111164540 in words is "eighty-five trillion, five hundred fifty-nine billion, one hundred eleven million, one hundred sixty-four thousand, five hundred forty".