91236741073 has 2 divisors, whose sum is σ = 91236741074. Its totient is φ = 91236741072.

The previous prime is 91236741059. The next prime is 91236741149. The reversal of 91236741073 is 37014763219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67221969984 + 24014771089 = 259272^2 + 154967^2 .

It is a cyclic number.

It is not a de Polignac number, because 91236741073 - 2²⁹ = 90699870161 is a prime.

It is not a weakly prime, because it can be changed into another prime (91236745073) 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, 45618370536 + 45618370537.

It is an arithmetic number, because the mean of its divisors is an integer number (45618370537).

Almost surely, 2^91236741073 is an apocalyptic number.

It is an amenable number.

91236741073 is a deficient number, since it is larger than the sum of its proper divisors (1).

91236741073 is an equidigital number, since it uses as much as digits as its factorization.

91236741073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 91236741073 in words is "ninety-one billion, two hundred thirty-six million, seven hundred forty-one thousand, seventy-three".