89716091845 has 4 divisors (see below), whose sum is σ = 107659310220. Its totient is φ = 71772873472.

The previous prime is 89716091833. The next prime is 89716091867. The reversal of 89716091845 is 54819061798.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13079581956 + 76636509889 = 114366^2 + 276833^2 .

It is a cyclic number.

It is not a de Polignac number, because 89716091845 - 2⁵ = 89716091813 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 89716091845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8971609180 + ... + 8971609189.

It is an arithmetic number, because the mean of its divisors is an integer number (26914827555).

Almost surely, 2^89716091845 is an apocalyptic number.

It is an amenable number.

89716091845 is a deficient number, since it is larger than the sum of its proper divisors (17943218375).

89716091845 is a wasteful number, since it uses less digits than its factorization.

89716091845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17943218374.

The product of its (nonzero) digits is 4354560, while the sum is 58.

The spelling of 89716091845 in words is "eighty-nine billion, seven hundred sixteen million, ninety-one thousand, eight hundred forty-five".