13806617287 has 2 divisors, whose sum is σ = 13806617288. Its totient is φ = 13806617286.

The previous prime is 13806617263. The next prime is 13806617291. The reversal of 13806617287 is 78271660831.

It is a happy number.

13806617287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13806617287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13806617287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13806617087) 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 as a sum of consecutive naturals, namely, 6903308643 + 6903308644.

It is an arithmetic number, because the mean of its divisors is an integer number (6903308644).

Almost surely, 2^13806617287 is an apocalyptic number.

13806617287 is a deficient number, since it is larger than the sum of its proper divisors (1).

13806617287 is an equidigital number, since it uses as much as digits as its factorization.

13806617287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 13806617287 in words is "thirteen billion, eight hundred six million, six hundred seventeen thousand, two hundred eighty-seven".