91622389073 has 2 divisors, whose sum is σ = 91622389074. Its totient is φ = 91622389072.

The previous prime is 91622389021. The next prime is 91622389081. The reversal of 91622389073 is 37098322619.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51789015184 + 39833373889 = 227572^2 + 199583^2 .

It is a cyclic number.

It is not a de Polignac number, because 91622389073 - 2⁶ = 91622389009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (91622389273) 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, 45811194536 + 45811194537.

It is an arithmetic number, because the mean of its divisors is an integer number (45811194537).

Almost surely, 2^91622389073 is an apocalyptic number.

It is an amenable number.

91622389073 is a deficient number, since it is larger than the sum of its proper divisors (1).

91622389073 is an equidigital number, since it uses as much as digits as its factorization.

91622389073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 91622389073 in words is "ninety-one billion, six hundred twenty-two million, three hundred eighty-nine thousand, seventy-three".