13211505863 has 2 divisors, whose sum is σ = 13211505864. Its totient is φ = 13211505862.

The previous prime is 13211505833. The next prime is 13211505887. The reversal of 13211505863 is 36850511231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13211505863 - 2⁶ = 13211505799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13211505833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605752931 + 6605752932.

It is an arithmetic number, because the mean of its divisors is an integer number (6605752932).

Almost surely, 2^13211505863 is an apocalyptic number.

13211505863 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211505863 is an equidigital number, since it uses as much as digits as its factorization.

13211505863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 13211505863 in words is "thirteen billion, two hundred eleven million, five hundred five thousand, eight hundred sixty-three".