13871836887 has 8 divisors (see below), whose sum is σ = 19133568240. Its totient is φ = 8928998400.

The previous prime is 13871836871. The next prime is 13871836997. The reversal of 13871836887 is 78863817831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13871836887 - 2⁴ = 13871836871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13871836887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13871836807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79723114 + ... + 79723287.

It is an arithmetic number, because the mean of its divisors is an integer number (2391696030).

Almost surely, 2^13871836887 is an apocalyptic number.

13871836887 is a deficient number, since it is larger than the sum of its proper divisors (5261731353).

13871836887 is a wasteful number, since it uses less digits than its factorization.

13871836887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159446433.

The product of its digits is 10838016, while the sum is 60.

The spelling of 13871836887 in words is "thirteen billion, eight hundred seventy-one million, eight hundred thirty-six thousand, eight hundred eighty-seven".