91645250111 has 2 divisors, whose sum is σ = 91645250112. Its totient is φ = 91645250110.

The previous prime is 91645250107. The next prime is 91645250113. The reversal of 91645250111 is 11105254619.

It is a strong prime.

It is an emirp because it is prime and its reverse (11105254619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91645250111 - 2² = 91645250107 is a prime.

Together with 91645250113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91645250113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45822625055 + 45822625056.

It is an arithmetic number, because the mean of its divisors is an integer number (45822625056).

Almost surely, 2^91645250111 is an apocalyptic number.

91645250111 is a deficient number, since it is larger than the sum of its proper divisors (1).

91645250111 is an equidigital number, since it uses as much as digits as its factorization.

91645250111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 35.

The spelling of 91645250111 in words is "ninety-one billion, six hundred forty-five million, two hundred fifty thousand, one hundred eleven".