85621635024 has 20 divisors (see below), whose sum is σ = 221189223936. Its totient is φ = 28540544992.

The previous prime is 85621635023. The next prime is 85621635031. The reversal of 85621635024 is 42053612658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85621635023) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 891891984 + ... + 891892079.

Almost surely, 2^85621635024 is an apocalyptic number.

It is an amenable number.

85621635024 is an abundant number, since it is smaller than the sum of its proper divisors (135567588912).

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

85621635024 is a wasteful number, since it uses less digits than its factorization.

85621635024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783784074 (or 1783784068 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 85621635024 in words is "eighty-five billion, six hundred twenty-one million, six hundred thirty-five thousand, twenty-four".