91601715112 has 16 divisors (see below), whose sum is σ = 171756496800. Its totient is φ = 45799982640.

The previous prime is 91601715103. The next prime is 91601715113. The reversal of 91601715112 is 21151710619.

It is a super-2 number, since 2×91601715112² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91601715113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628189 + ... + 760147.

It is an arithmetic number, because the mean of its divisors is an integer number (10734781050).

Almost surely, 2^91601715112 is an apocalyptic number.

It is an amenable number.

91601715112 is a deficient number, since it is larger than the sum of its proper divisors (80154781688).

91601715112 is a wasteful number, since it uses less digits than its factorization.

91601715112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218736 (or 218732 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 34.

The spelling of 91601715112 in words is "ninety-one billion, six hundred one million, seven hundred fifteen thousand, one hundred twelve".