91550722933 has 2 divisors, whose sum is σ = 91550722934. Its totient is φ = 91550722932.

The previous prime is 91550722927. The next prime is 91550722961. The reversal of 91550722933 is 33922705519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59329754929 + 32220968004 = 243577^2 + 179502^2 .

It is a cyclic number.

It is not a de Polignac number, because 91550722933 - 2¹³ = 91550714741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91550722973) 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, 45775361466 + 45775361467.

It is an arithmetic number, because the mean of its divisors is an integer number (45775361467).

Almost surely, 2^91550722933 is an apocalyptic number.

It is an amenable number.

91550722933 is a deficient number, since it is larger than the sum of its proper divisors (1).

91550722933 is an equidigital number, since it uses as much as digits as its factorization.

91550722933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 46.

The spelling of 91550722933 in words is "ninety-one billion, five hundred fifty million, seven hundred twenty-two thousand, nine hundred thirty-three".