90189663876 has 144 divisors (see below), whose sum is σ = 257008647168. Its totient is φ = 26476934400.

The previous prime is 90189663829. The next prime is 90189663877. The reversal of 90189663876 is 67836698109.

It is not an unprimeable number, because it can be changed into a prime (90189663877) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 986290 + ... + 1073846.

It is an arithmetic number, because the mean of its divisors is an integer number (1784782272).

Almost surely, 2^90189663876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90189663876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128504323584).

90189663876 is an abundant number, since it is smaller than the sum of its proper divisors (166818983292).

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

90189663876 is a wasteful number, since it uses less digits than its factorization.

90189663876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87682 (or 87677 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 90189663876 in words is "ninety billion, one hundred eighty-nine million, six hundred sixty-three thousand, eight hundred seventy-six".