90115000000 has 224 divisors, whose sum is σ = 227706448320. Its totient is φ = 35376000000.

The previous prime is 90114999937. The next prime is 90115000133. The reversal of 90115000000 is 51109.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334999866 + ... + 335000134.

Almost surely, 2^90115000000 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 90115000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113853224160).

90115000000 is an abundant number, since it is smaller than the sum of its proper divisors (137591448320).

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

90115000000 is an frugal number, since it uses more digits than its factorization.

90115000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 16.

Adding to 90115000000 its reverse (51109), we get a palindrome (90115051109).

The spelling of 90115000000 in words is "ninety billion, one hundred fifteen million", and thus it is an aban number.