91013465088 has 528 divisors, whose sum is σ = 330470300160. Its totient is φ = 23482662912.

The previous prime is 91013465083. The next prime is 91013465093. The reversal of 91013465088 is 88056431019.

91013465088 is a `hidden beast` number, since 9 + 1 + 0 + 134 + 6 + 508 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (91013465083) and next prime (91013465093).

It is not an unprimeable number, because it can be changed into a prime (91013465083) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39415678 + ... + 39417986.

It is an arithmetic number, because the mean of its divisors is an integer number (625890720).

Almost surely, 2^91013465088 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 91013465088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165235150080).

91013465088 is an abundant number, since it is smaller than the sum of its proper divisors (239456835072).

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

91013465088 is a wasteful number, since it uses less digits than its factorization.

91013465088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402 (or 2381 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 91013465088 in words is "ninety-one billion, thirteen million, four hundred sixty-five thousand, eighty-eight".