90999935040 has 224 divisors, whose sum is σ = 330413831424. Its totient is φ = 20786503680.

The previous prime is 90999935027. The next prime is 90999935053. The reversal of 90999935040 is 4053999909.

It is an interprime number because it is at equal distance from previous prime (90999935027) and next prime (90999935053).

It is a tau number, because it is divible by the number of its divisors (224).

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, 13416450 + ... + 13423230.

Almost surely, 2^90999935040 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 90999935040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165206915712).

90999935040 is an abundant number, since it is smaller than the sum of its proper divisors (239413896384).

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

90999935040 is a wasteful number, since it uses less digits than its factorization.

90999935040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8805 (or 8795 counting only the distinct ones).

The product of its (nonzero) digits is 3542940, while the sum is 57.

The spelling of 90999935040 in words is "ninety billion, nine hundred ninety-nine million, nine hundred thirty-five thousand, forty".