2016872171886 has 128 divisors (see below), whose sum is σ = 4767010859520. Its totient is φ = 560826777600.

The previous prime is 2016872171869. The next prime is 2016872171887. The reversal of 2016872171886 is 6881712786102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016872171887) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 128137005 + ... + 128152743.

It is an arithmetic number, because the mean of its divisors is an integer number (37242272340).

Almost surely, 2^{2016872171886} is an apocalyptic number.

2016872171886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2016872171886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2383505429760).

2016872171886 is an abundant number, since it is smaller than the sum of its proper divisors (2750138687634).

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

2016872171886 is a wasteful number, since it uses less digits than its factorization.

2016872171886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16642.

The product of its (nonzero) digits is 3612672, while the sum is 57.

The spelling of 2016872171886 in words is "two trillion, sixteen billion, eight hundred seventy-two million, one hundred seventy-one thousand, eight hundred eighty-six".