90994734480 has 320 divisors, whose sum is σ = 322224376320. Its totient is φ = 21043642368.

The previous prime is 90994734461. The next prime is 90994734487. The reversal of 90994734480 is 8443749909.

It is a self number, because there is not a number n which added to its sum of digits gives 90994734480.

It is not an unprimeable number, because it can be changed into a prime (90994734487) 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, 39407566 + ... + 39409874.

It is an arithmetic number, because the mean of its divisors is an integer number (1006951176).

Almost surely, 2^90994734480 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 90994734480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161112188160).

90994734480 is an abundant number, since it is smaller than the sum of its proper divisors (231229641840).

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

90994734480 is a wasteful number, since it uses less digits than its factorization.

90994734480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098 (or 3092 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 90994734480 in words is "ninety billion, nine hundred ninety-four million, seven hundred thirty-four thousand, four hundred eighty".