90099816156 has 96 divisors (see below), whose sum is σ = 267172416000. Its totient is φ = 25722555264.

The previous prime is 90099816139. The next prime is 90099816269. The reversal of 90099816156 is 65161899009.

It is a super-3 number, since 3×90099816156³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 928255 + ... + 1020713.

It is an arithmetic number, because the mean of its divisors is an integer number (2783046000).

Almost surely, 2^90099816156 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 90099816156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133586208000).

90099816156 is an abundant number, since it is smaller than the sum of its proper divisors (177072599844).

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

90099816156 is a wasteful number, since it uses less digits than its factorization.

90099816156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93768 (or 93760 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The spelling of 90099816156 in words is "ninety billion, ninety-nine million, eight hundred sixteen thousand, one hundred fifty-six".