889618649128 has 16 divisors (see below), whose sum is σ = 1819674509760. Its totient is φ = 404372113200.

The previous prime is 889618649119. The next prime is 889618649191. The reversal of 889618649128 is 821946816988.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5054651328 + ... + 5054651503.

It is an arithmetic number, because the mean of its divisors is an integer number (113729656860).

Almost surely, 2^889618649128 is an apocalyptic number.

889618649128 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

889618649128 is an abundant number, since it is smaller than the sum of its proper divisors (930055860632).

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

889618649128 is a wasteful number, since it uses less digits than its factorization.

889618649128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10109302848 (or 10109302844 counting only the distinct ones).

The product of its digits is 95551488, while the sum is 70.

The spelling of 889618649128 in words is "eight hundred eighty-nine billion, six hundred eighteen million, six hundred forty-nine thousand, one hundred twenty-eight".