13143888257 has 4 divisors (see below), whose sum is σ = 13172034096. Its totient is φ = 13115742420.

The previous prime is 13143888211. The next prime is 13143888271. The reversal of 13143888257 is 75288834131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13143888257 - 2¹⁶ = 13143822721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13143888287) 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, 14072219 + ... + 14073152.

It is an arithmetic number, because the mean of its divisors is an integer number (3293008524).

Almost surely, 2^13143888257 is an apocalyptic number.

It is an amenable number.

13143888257 is a deficient number, since it is larger than the sum of its proper divisors (28145839).

13143888257 is an equidigital number, since it uses as much as digits as its factorization.

13143888257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28145838.

The product of its digits is 1290240, while the sum is 50.

The spelling of 13143888257 in words is "thirteen billion, one hundred forty-three million, eight hundred eighty-eight thousand, two hundred fifty-seven".