91022864033 has 2 divisors, whose sum is σ = 91022864034. Its totient is φ = 91022864032.

The previous prime is 91022864011. The next prime is 91022864047. The reversal of 91022864033 is 33046822019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74197401664 + 16825462369 = 272392^2 + 129713^2 .

It is a cyclic number.

It is not a de Polignac number, because 91022864033 - 2¹² = 91022859937 is a prime.

It is not a weakly prime, because it can be changed into another prime (91022824033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45511432016 + 45511432017.

It is an arithmetic number, because the mean of its divisors is an integer number (45511432017).

Almost surely, 2^91022864033 is an apocalyptic number.

It is an amenable number.

91022864033 is a deficient number, since it is larger than the sum of its proper divisors (1).

91022864033 is an equidigital number, since it uses as much as digits as its factorization.

91022864033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 91022864033 in words is "ninety-one billion, twenty-two million, eight hundred sixty-four thousand, thirty-three".