91706011951 has 2 divisors, whose sum is σ = 91706011952. Its totient is φ = 91706011950.

The previous prime is 91706011897. The next prime is 91706011961. The reversal of 91706011951 is 15911060719.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91706011951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91706011961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45853005975 + 45853005976.

It is an arithmetic number, because the mean of its divisors is an integer number (45853005976).

Almost surely, 2^91706011951 is an apocalyptic number.

91706011951 is a deficient number, since it is larger than the sum of its proper divisors (1).

91706011951 is an equidigital number, since it uses as much as digits as its factorization.

91706011951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 40.

The spelling of 91706011951 in words is "ninety-one billion, seven hundred six million, eleven thousand, nine hundred fifty-one".