89261542369 has 2 divisors, whose sum is σ = 89261542370. Its totient is φ = 89261542368.

The previous prime is 89261542273. The next prime is 89261542387. The reversal of 89261542369 is 96324516298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74936325025 + 14325217344 = 273745^2 + 119688^2 .

It is a cyclic number.

It is not a de Polignac number, because 89261542369 - 2⁷ = 89261542241 is a prime.

It is a super-2 number, since 2×89261542369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89261542169) 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, 44630771184 + 44630771185.

It is an arithmetic number, because the mean of its divisors is an integer number (44630771185).

Almost surely, 2^89261542369 is an apocalyptic number.

It is an amenable number.

89261542369 is a deficient number, since it is larger than the sum of its proper divisors (1).

89261542369 is an equidigital number, since it uses as much as digits as its factorization.

89261542369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 55.

The spelling of 89261542369 in words is "eighty-nine billion, two hundred sixty-one million, five hundred forty-two thousand, three hundred sixty-nine".