91730323417 has 2 divisors, whose sum is σ = 91730323418. Its totient is φ = 91730323416.

The previous prime is 91730323411. The next prime is 91730323441. The reversal of 91730323417 is 71432303719.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75767517081 + 15962806336 = 275259^2 + 126344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91730323417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91730323417.

It is not a weakly prime, because it can be changed into another prime (91730323411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45865161708 + 45865161709.

It is an arithmetic number, because the mean of its divisors is an integer number (45865161709).

Almost surely, 2^91730323417 is an apocalyptic number.

It is an amenable number.

91730323417 is a deficient number, since it is larger than the sum of its proper divisors (1).

91730323417 is an equidigital number, since it uses as much as digits as its factorization.

91730323417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 40.

The spelling of 91730323417 in words is "ninety-one billion, seven hundred thirty million, three hundred twenty-three thousand, four hundred seventeen".