90795597728 has 24 divisors (see below), whose sum is σ = 195004182240. Its totient is φ = 41270726080.

The previous prime is 90795597727. The next prime is 90795597733. The reversal of 90795597728 is 82779559709.

It is not an unprimeable number, because it can be changed into a prime (90795597727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128970668 + ... + 128971371.

It is an arithmetic number, because the mean of its divisors is an integer number (8125174260).

Almost surely, 2^90795597728 is an apocalyptic number.

It is an amenable number.

90795597728 is an abundant number, since it is smaller than the sum of its proper divisors (104208584512).

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

90795597728 is a wasteful number, since it uses less digits than its factorization.

90795597728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257942060 (or 257942052 counting only the distinct ones).

The product of its (nonzero) digits is 100018800, while the sum is 68.

The spelling of 90795597728 in words is "ninety billion, seven hundred ninety-five million, five hundred ninety-seven thousand, seven hundred twenty-eight".