889665566988 has 48 divisors (see below), whose sum is σ = 2325808767744. Its totient is φ = 262309256640.

The previous prime is 889665566987. The next prime is 889665567019.

889665566988 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 889665566988.

It is not an unprimeable number, because it can be changed into a prime (889665566987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91074720 + ... + 91084487.

It is an arithmetic number, because the mean of its divisors is an integer number (48454349328).

Almost surely, 2^889665566988 is an apocalyptic number.

It is an amenable number.

889665566988 is an abundant number, since it is smaller than the sum of its proper divisors (1436143200756).

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

889665566988 is a wasteful number, since it uses less digits than its factorization.

889665566988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182159262 (or 182159260 counting only the distinct ones).

The product of its digits is 10749542400, while the sum is 84.

The spelling of 889665566988 in words is "eight hundred eighty-nine billion, six hundred sixty-five million, five hundred sixty-six thousand, nine hundred eighty-eight".