2081388518872 has 16 divisors (see below), whose sum is σ = 4202803740240. Its totient is φ = 960640854816.

The previous prime is 2081388518779. The next prime is 2081388518873. The reversal of 2081388518872 is 2788158831802.

It is a self number, because there is not a number n which added to its sum of digits gives 2081388518872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081388518873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10006675468 + ... + 10006675675.

It is an arithmetic number, because the mean of its divisors is an integer number (262675233765).

Almost surely, 2^{2081388518872} is an apocalyptic number.

It is an amenable number.

2081388518872 is an abundant number, since it is smaller than the sum of its proper divisors (2121415221368).

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

2081388518872 is a wasteful number, since it uses less digits than its factorization.

2081388518872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20013351162 (or 20013351158 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 61.

The spelling of 2081388518872 in words is "two trillion, eighty-one billion, three hundred eighty-eight million, five hundred eighteen thousand, eight hundred seventy-two".