13811322581287 has 64 divisors (see below), whose sum is σ = 17904630666240. Its totient is φ = 10337660928000.

The previous prime is 13811322581279. The next prime is 13811322581323. The reversal of 13811322581287 is 78218522311831.

It is not a de Polignac number, because 13811322581287 - 2³ = 13811322581279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13811322581237) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 474585037 + ... + 474614137.

It is an arithmetic number, because the mean of its divisors is an integer number (279759854160).

Almost surely, 2^{13811322581287} is an apocalyptic number.

13811322581287 is a deficient number, since it is larger than the sum of its proper divisors (4093308084953).

13811322581287 is a wasteful number, since it uses less digits than its factorization.

13811322581287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30232.

The product of its digits is 1290240, while the sum is 52.

The spelling of 13811322581287 in words is "thirteen trillion, eight hundred eleven billion, three hundred twenty-two million, five hundred eighty-one thousand, two hundred eighty-seven".