13112011200809 has 2 divisors, whose sum is σ = 13112011200810. Its totient is φ = 13112011200808.

The previous prime is 13112011200791. The next prime is 13112011200853. The reversal of 13112011200809 is 90800211021131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6617653350400 + 6494357850409 = 2572480^2 + 2548403^2 .

It is a cyclic number.

It is not a de Polignac number, because 13112011200809 - 2⁴⁰ = 12012499573033 is a prime.

It is not a weakly prime, because it can be changed into another prime (13112019200809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556005600404 + 6556005600405.

It is an arithmetic number, because the mean of its divisors is an integer number (6556005600405).

Almost surely, 2^{13112011200809} is an apocalyptic number.

It is an amenable number.

13112011200809 is a deficient number, since it is larger than the sum of its proper divisors (1).

13112011200809 is an equidigital number, since it uses as much as digits as its factorization.

13112011200809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 13112011200809 in words is "thirteen trillion, one hundred twelve billion, eleven million, two hundred thousand, eight hundred nine".