89636566218 has 32 divisors (see below), whose sum is σ = 181053480960. Its totient is φ = 29583091440.

The previous prime is 89636566193. The next prime is 89636566219. The reversal of 89636566218 is 81266563698.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (89636566219) 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 in 15 ways as a sum of consecutive naturals, for example, 254353 + ... + 493931.

It is an arithmetic number, because the mean of its divisors is an integer number (5657921280).

Almost surely, 2^89636566218 is an apocalyptic number.

89636566218 is an abundant number, since it is smaller than the sum of its proper divisors (91416914742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89636566218 is a wasteful number, since it uses less digits than its factorization.

89636566218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240202.

The product of its digits is 22394880, while the sum is 60.

The spelling of 89636566218 in words is "eighty-nine billion, six hundred thirty-six million, five hundred sixty-six thousand, two hundred eighteen".