13879725105845 has 64 divisors (see below), whose sum is σ = 17087417138880. Its totient is φ = 10820050329600.

The previous prime is 13879725105839. The next prime is 13879725105887. The reversal of 13879725105845 is 54850152797831.

It can be written as a sum of positive squares in 32 ways, for example, as 11084331710596 + 2795393395249 = 3329314^2 + 1671943^2 .

It is not a de Polignac number, because 13879725105845 - 2¹⁰ = 13879725104821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14749973075 + ... + 14749974015.

It is an arithmetic number, because the mean of its divisors is an integer number (266990892795).

Almost surely, 2^{13879725105845} is an apocalyptic number.

It is an amenable number.

13879725105845 is a deficient number, since it is larger than the sum of its proper divisors (3207692033035).

13879725105845 is a wasteful number, since it uses less digits than its factorization.

13879725105845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106.

The product of its (nonzero) digits is 84672000, while the sum is 65.

The spelling of 13879725105845 in words is "thirteen trillion, eight hundred seventy-nine billion, seven hundred twenty-five million, one hundred five thousand, eight hundred forty-five".