90320855568 has 60 divisors (see below), whose sum is σ = 247861509360. Its totient is φ = 28335950336.

The previous prime is 90320855567. The next prime is 90320855587. The reversal of 90320855568 is 86555802309.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 90320855568.

It is not an unprimeable number, because it can be changed into a prime (90320855563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3241638 + ... + 3269381.

It is an arithmetic number, because the mean of its divisors is an integer number (4131025156).

Almost surely, 2^90320855568 is an apocalyptic number.

It is an amenable number.

90320855568 is an abundant number, since it is smaller than the sum of its proper divisors (157540653792).

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

90320855568 is a wasteful number, since it uses less digits than its factorization.

90320855568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6511064 (or 6511041 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 90320855568 in words is "ninety billion, three hundred twenty million, eight hundred fifty-five thousand, five hundred sixty-eight".