90738904020 has 192 divisors, whose sum is σ = 274201804800. Its totient is φ = 22354675200.

The previous prime is 90738904019. The next prime is 90738904021. The reversal of 90738904020 is 2040983709.

It is an interprime number because it is at equal distance from previous prime (90738904019) and next prime (90738904021).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90738904021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25623450 + ... + 25626990.

It is an arithmetic number, because the mean of its divisors is an integer number (1428134400).

Almost surely, 2^90738904020 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 90738904020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137100902400).

90738904020 is an abundant number, since it is smaller than the sum of its proper divisors (183462900780).

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

90738904020 is a wasteful number, since it uses less digits than its factorization.

90738904020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206 (or 4204 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 90738904020 in words is "ninety billion, seven hundred thirty-eight million, nine hundred four thousand, twenty".