90127118020 has 12 divisors (see below), whose sum is σ = 189266947884. Its totient is φ = 36050847200.

The previous prime is 90127117999. The next prime is 90127118021. The reversal of 90127118020 is 2081172109.

It can be written as a sum of positive squares in 2 ways, for example, as 66959842756 + 23167275264 = 258766^2 + 152208^2 .

It is not an unprimeable number, because it can be changed into a prime (90127118021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253177931 + ... + 2253177970.

It is an arithmetic number, because the mean of its divisors is an integer number (15772245657).

Almost surely, 2^90127118020 is an apocalyptic number.

It is an amenable number.

90127118020 is an abundant number, since it is smaller than the sum of its proper divisors (99139829864).

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

90127118020 is a wasteful number, since it uses less digits than its factorization.

90127118020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506355910 (or 4506355908 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 90127118020 in words is "ninety billion, one hundred twenty-seven million, one hundred eighteen thousand, twenty".