90797801472 has 512 divisors, whose sum is σ = 312974188800. Its totient is φ = 25798901760.

The previous prime is 90797801417. The next prime is 90797801491. The reversal of 90797801472 is 27410879709.

90797801472 is a `hidden beast` number, since 9 + 0 + 7 + 97 + 80 + 1 + 472 = 666.

It is a tau number, because it is divible by the number of its divisors (512).

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, 501645222 + ... + 501645402.

Almost surely, 2^90797801472 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 90797801472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156487094400).

90797801472 is an abundant number, since it is smaller than the sum of its proper divisors (222176387328).

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

90797801472 is an frugal number, since it uses more digits than its factorization.

90797801472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The spelling of 90797801472 in words is "ninety billion, seven hundred ninety-seven million, eight hundred one thousand, four hundred seventy-two".