11216138656913 has 2 divisors, whose sum is σ = 11216138656914. Its totient is φ = 11216138656912.

The previous prime is 11216138656859. The next prime is 11216138656937. The reversal of 11216138656913 is 31965683161211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11114535819409 + 101602837504 = 3333847^2 + 318752^2 .

It is a cyclic number.

It is not a de Polignac number, because 11216138656913 - 2¹⁶ = 11216138591377 is a prime.

It is not a weakly prime, because it can be changed into another prime (11216138652913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608069328456 + 5608069328457.

It is an arithmetic number, because the mean of its divisors is an integer number (5608069328457).

Almost surely, 2^{11216138656913} is an apocalyptic number.

It is an amenable number.

11216138656913 is a deficient number, since it is larger than the sum of its proper divisors (1).

11216138656913 is an equidigital number, since it uses as much as digits as its factorization.

11216138656913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 53.

The spelling of 11216138656913 in words is "eleven trillion, two hundred sixteen billion, one hundred thirty-eight million, six hundred fifty-six thousand, nine hundred thirteen".