91955574983 has 2 divisors, whose sum is σ = 91955574984. Its totient is φ = 91955574982.

The previous prime is 91955574947. The next prime is 91955575009. The reversal of 91955574983 is 38947555919.

It is a strong prime.

It is an emirp because it is prime and its reverse (38947555919) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91955574983 - 2²⁸ = 91687139527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91955574913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45977787491 + 45977787492.

It is an arithmetic number, because the mean of its divisors is an integer number (45977787492).

Almost surely, 2^91955574983 is an apocalyptic number.

91955574983 is a deficient number, since it is larger than the sum of its proper divisors (1).

91955574983 is an equidigital number, since it uses as much as digits as its factorization.

91955574983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236000, while the sum is 65.

The spelling of 91955574983 in words is "ninety-one billion, nine hundred fifty-five million, five hundred seventy-four thousand, nine hundred eighty-three".