84381971888 has 20 divisors (see below), whose sum is σ = 166968584160. Its totient is φ = 41293305024.

The previous prime is 84381971857. The next prime is 84381971903. The reversal of 84381971888 is 88817918348.

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, 56104283 + ... + 56105786.

It is an arithmetic number, because the mean of its divisors is an integer number (8348429208).

Almost surely, 2^84381971888 is an apocalyptic number.

It is an amenable number.

84381971888 is a deficient number, since it is larger than the sum of its proper divisors (82586612272).

84381971888 is a wasteful number, since it uses less digits than its factorization.

84381971888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112210124 (or 112210118 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 65.

The spelling of 84381971888 in words is "eighty-four billion, three hundred eighty-one million, nine hundred seventy-one thousand, eight hundred eighty-eight".