13888890277765 has 16 divisors (see below), whose sum is σ = 16977620617200. Its totient is φ = 10904622059520.

The previous prime is 13888890277723. The next prime is 13888890277777. The reversal of 13888890277765 is 56777209888831.

It can be written as a sum of positive squares in 8 ways, for example, as 4187945323809 + 9700944953956 = 2046447^2 + 3114634^2 .

It is not a de Polignac number, because 13888890277765 - 2¹⁹ = 13888889753477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50572794 + ... + 50846683.

It is an arithmetic number, because the mean of its divisors is an integer number (1061101288575).

Almost surely, 2^{13888890277765} is an apocalyptic number.

It is an amenable number.

13888890277765 is a deficient number, since it is larger than the sum of its proper divisors (3088730339435).

13888890277765 is a wasteful number, since it uses less digits than its factorization.

13888890277765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101419992.

The product of its (nonzero) digits is 2275983360, while the sum is 79.

The spelling of 13888890277765 in words is "thirteen trillion, eight hundred eighty-eight billion, eight hundred ninety million, two hundred seventy-seven thousand, seven hundred sixty-five".