13087844861 has 24 divisors (see below), whose sum is σ = 16471229760. Its totient is φ = 10179651456.

The previous prime is 13087844843. The next prime is 13087844867. The reversal of 13087844861 is 16844878031.

It is a happy number.

13087844861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13087844861 - 2²² = 13083650557 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13087844867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23960 + ... + 163553.

It is an arithmetic number, because the mean of its divisors is an integer number (686301240).

Almost surely, 2^13087844861 is an apocalyptic number.

It is an amenable number.

13087844861 is a deficient number, since it is larger than the sum of its proper divisors (3383384899).

13087844861 is a wasteful number, since it uses less digits than its factorization.

13087844861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187605 (or 187592 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 50.

The spelling of 13087844861 in words is "thirteen billion, eighty-seven million, eight hundred forty-four thousand, eight hundred sixty-one".