90859986160 has 40 divisors (see below), whose sum is σ = 211266540576. Its totient is φ = 36341057280.

The previous prime is 90859986103. The next prime is 90859986187. The reversal of 90859986160 is 6168995809.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140757 + ... + 1217803.

Almost surely, 2^90859986160 is an apocalyptic number.

It is an amenable number.

90859986160 is an abundant number, since it is smaller than the sum of its proper divisors (120406554416).

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

90859986160 is a wasteful number, since it uses less digits than its factorization.

90859986160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91801 (or 91795 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 61.

The spelling of 90859986160 in words is "ninety billion, eight hundred fifty-nine million, nine hundred eighty-six thousand, one hundred sixty".