91730125193 has 4 divisors (see below), whose sum is σ = 104834428800. Its totient is φ = 78625821588.

The previous prime is 91730125183. The next prime is 91730125211. The reversal of 91730125193 is 39152103719.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91730125193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91730125193.

It is not an unprimeable number, because it can be changed into a prime (91730125133) 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 3 ways as a sum of consecutive naturals, for example, 6552151793 + ... + 6552151806.

It is an arithmetic number, because the mean of its divisors is an integer number (26208607200).

Almost surely, 2^91730125193 is an apocalyptic number.

It is an amenable number.

91730125193 is a deficient number, since it is larger than the sum of its proper divisors (13104303607).

91730125193 is a wasteful number, since it uses less digits than its factorization.

91730125193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13104303606.

The product of its (nonzero) digits is 51030, while the sum is 41.

The spelling of 91730125193 in words is "ninety-one billion, seven hundred thirty million, one hundred twenty-five thousand, one hundred ninety-three".