91440412112 has 20 divisors (see below), whose sum is σ = 202475198496. Its totient is φ = 39188748000.

The previous prime is 91440412079. The next prime is 91440412163. The reversal of 91440412112 is 21121404419.

It is a super-2 number, since 2×91440412112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408216014 + ... + 408216237.

Almost surely, 2^91440412112 is an apocalyptic number.

It is an amenable number.

91440412112 is an abundant number, since it is smaller than the sum of its proper divisors (111034786384).

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

91440412112 is a wasteful number, since it uses less digits than its factorization.

91440412112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816432266 (or 816432260 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 91440412112 in words is "ninety-one billion, four hundred forty million, four hundred twelve thousand, one hundred twelve".