91599048288 has 576 divisors, whose sum is σ = 308360606400. Its totient is φ = 26728289280.

The previous prime is 91599048283. The next prime is 91599048313. The reversal of 91599048288 is 88284099519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91599048283) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 245573670 + ... + 245574042.

It is an arithmetic number, because the mean of its divisors is an integer number (535348275).

Almost surely, 2^91599048288 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 91599048288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154180303200).

91599048288 is an abundant number, since it is smaller than the sum of its proper divisors (216761558112).

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

91599048288 is a wasteful number, since it uses less digits than its factorization.

91599048288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 91599048288 in words is "ninety-one billion, five hundred ninety-nine million, forty-eight thousand, two hundred eighty-eight".