91355114412 has 96 divisors (see below), whose sum is σ = 243572313600. Its totient is φ = 29597720256.

The previous prime is 91355114401. The next prime is 91355114413. The reversal of 91355114412 is 21441155319.

91355114412 is a `hidden beast` number, since 9 + 135 + 511 + 4 + 4 + 1 + 2 = 666.

It is a super-2 number, since 2×91355114412² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (91355114413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 537889 + ... + 687047.

It is an arithmetic number, because the mean of its divisors is an integer number (2537211600).

Almost surely, 2^91355114412 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 91355114412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121786156800).

91355114412 is an abundant number, since it is smaller than the sum of its proper divisors (152217199188).

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

91355114412 is a wasteful number, since it uses less digits than its factorization.

91355114412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149332 (or 149324 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The spelling of 91355114412 in words is "ninety-one billion, three hundred fifty-five million, one hundred fourteen thousand, four hundred twelve".