91344172113 has 24 divisors (see below), whose sum is σ = 134244839040. Its totient is φ = 59834103840.

The previous prime is 91344172093. The next prime is 91344172121. The reversal of 91344172113 is 31127144319.

It is a happy number.

91344172113 is a `hidden beast` number, since 91 + 344 + 17 + 211 + 3 = 666.

It is not a de Polignac number, because 91344172113 - 2¹⁴ = 91344155729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91344172123) 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, 1048248 + ... + 1132038.

It is an arithmetic number, because the mean of its divisors is an integer number (5593534960).

Almost surely, 2^91344172113 is an apocalyptic number.

It is an amenable number.

91344172113 is a deficient number, since it is larger than the sum of its proper divisors (42900666927).

91344172113 is a wasteful number, since it uses less digits than its factorization.

91344172113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85909 (or 85906 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The spelling of 91344172113 in words is "ninety-one billion, three hundred forty-four million, one hundred seventy-two thousand, one hundred thirteen".