91135112152 has 96 divisors (see below), whose sum is σ = 203399370000. Its totient is φ = 38158283520.

The previous prime is 91135112147. The next prime is 91135112153. The reversal of 91135112152 is 25121153119.

It is a super-2 number, since 2×91135112152² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91135112153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3550099 + ... + 3575677.

Almost surely, 2^91135112152 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 91135112152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101699685000).

91135112152 is an abundant number, since it is smaller than the sum of its proper divisors (112264257848).

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

91135112152 is a wasteful number, since it uses less digits than its factorization.

91135112152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25809 (or 25798 counting only the distinct ones).

The product of its digits is 2700, while the sum is 31.

The spelling of 91135112152 in words is "ninety-one billion, one hundred thirty-five million, one hundred twelve thousand, one hundred fifty-two".