13756771123211 has 2 divisors, whose sum is σ = 13756771123212. Its totient is φ = 13756771123210.

The previous prime is 13756771123181. The next prime is 13756771123217. The reversal of 13756771123211 is 11232117765731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13756771123211 is a prime.

It is not a weakly prime, because it can be changed into another prime (13756771123217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6878385561605 + 6878385561606.

It is an arithmetic number, because the mean of its divisors is an integer number (6878385561606).

Almost surely, 2^{13756771123211} is an apocalyptic number.

13756771123211 is a deficient number, since it is larger than the sum of its proper divisors (1).

13756771123211 is an equidigital number, since it uses as much as digits as its factorization.

13756771123211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370440, while the sum is 47.

Adding to 13756771123211 its reverse (11232117765731), we get a palindrome (24988888888942).

The spelling of 13756771123211 in words is "thirteen trillion, seven hundred fifty-six billion, seven hundred seventy-one million, one hundred twenty-three thousand, two hundred eleven".