89816206885 has 4 divisors (see below), whose sum is σ = 107779448268. Its totient is φ = 71852965504.

The previous prime is 89816206819. The next prime is 89816206919. The reversal of 89816206885 is 58860261898.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58860261898 = 2 ⋅29430130949.

It can be written as a sum of positive squares in 2 ways, for example, as 35172001764 + 54644205121 = 187542^2 + 233761^2 .

It is a cyclic number.

It is not a de Polignac number, because 89816206885 - 2¹¹ = 89816204837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 8981620684 + ... + 8981620693.

It is an arithmetic number, because the mean of its divisors is an integer number (26944862067).

Almost surely, 2^89816206885 is an apocalyptic number.

It is an amenable number.

89816206885 is a deficient number, since it is larger than the sum of its proper divisors (17963241383).

89816206885 is a wasteful number, since it uses less digits than its factorization.

89816206885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17963241382.

The product of its (nonzero) digits is 13271040, while the sum is 61.

The spelling of 89816206885 in words is "eighty-nine billion, eight hundred sixteen million, two hundred six thousand, eight hundred eighty-five".