91584322579 has 2 divisors, whose sum is σ = 91584322580. Its totient is φ = 91584322578.

The previous prime is 91584322549. The next prime is 91584322591. The reversal of 91584322579 is 97522348519.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91584322579 - 2⁷ = 91584322451 is a prime.

It is a super-2 number, since 2×91584322579² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91584322549) 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, 45792161289 + 45792161290.

It is an arithmetic number, because the mean of its divisors is an integer number (45792161290).

Almost surely, 2^91584322579 is an apocalyptic number.

91584322579 is a deficient number, since it is larger than the sum of its proper divisors (1).

91584322579 is an equidigital number, since it uses as much as digits as its factorization.

91584322579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The spelling of 91584322579 in words is "ninety-one billion, five hundred eighty-four million, three hundred twenty-two thousand, five hundred seventy-nine".