91469559589 has 2 divisors, whose sum is σ = 91469559590. Its totient is φ = 91469559588.

The previous prime is 91469559553. The next prime is 91469559611. The reversal of 91469559589 is 98595596419.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55048890625 + 36420668964 = 234625^2 + 190842^2 .

It is a cyclic number.

It is not a de Polignac number, because 91469559589 - 2¹⁵ = 91469526821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91469559689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45734779794 + 45734779795.

It is an arithmetic number, because the mean of its divisors is an integer number (45734779795).

Almost surely, 2^91469559589 is an apocalyptic number.

It is an amenable number.

91469559589 is a deficient number, since it is larger than the sum of its proper divisors (1).

91469559589 is an equidigital number, since it uses as much as digits as its factorization.

91469559589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464000, while the sum is 70.

The spelling of 91469559589 in words is "ninety-one billion, four hundred sixty-nine million, five hundred fifty-nine thousand, five hundred eighty-nine".