13776221817823 has 2 divisors, whose sum is σ = 13776221817824. Its totient is φ = 13776221817822.

The previous prime is 13776221817817. The next prime is 13776221817851. The reversal of 13776221817823 is 32871812267731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13776221817823 - 2⁹ = 13776221817311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13776221817893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6888110908911 + 6888110908912.

It is an arithmetic number, because the mean of its divisors is an integer number (6888110908912).

Almost surely, 2^{13776221817823} is an apocalyptic number.

13776221817823 is a deficient number, since it is larger than the sum of its proper divisors (1).

13776221817823 is an equidigital number, since it uses as much as digits as its factorization.

13776221817823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 58.

The spelling of 13776221817823 in words is "thirteen trillion, seven hundred seventy-six billion, two hundred twenty-one million, eight hundred seventeen thousand, eight hundred twenty-three".