83878658664166 has 16 divisors (see below), whose sum is σ = 128744453376000. Its totient is φ = 40963847927688.

The previous prime is 83878658664127. The next prime is 83878658664181. The reversal of 83878658664166 is 66146685687838.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 83878658664166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24393655 + ... + 27618973.

It is an arithmetic number, because the mean of its divisors is an integer number (8046528336000).

Almost surely, 2^{83878658664166} is an apocalyptic number.

83878658664166 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

83878658664166 is a deficient number, since it is larger than the sum of its proper divisors (44865794711834).

83878658664166 is a wasteful number, since it uses less digits than its factorization.

83878658664166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527763.

The product of its digits is 13377208320, while the sum is 82.

The spelling of 83878658664166 in words is "eighty-three trillion, eight hundred seventy-eight billion, six hundred fifty-eight million, six hundred sixty-four thousand, one hundred sixty-six".