219320713813 has 2 divisors, whose sum is σ = 219320713814. Its totient is φ = 219320713812.

The previous prime is 219320713753. The next prime is 219320713861. The reversal of 219320713813 is 318317023912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201563285764 + 17757428049 = 448958^2 + 133257^2 .

It is a cyclic number.

It is not a de Polignac number, because 219320713813 - 2²⁵ = 219287159381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219320713013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109660356906 + 109660356907.

It is an arithmetic number, because the mean of its divisors is an integer number (109660356907).

Almost surely, 2^219320713813 is an apocalyptic number.

It is an amenable number.

219320713813 is a deficient number, since it is larger than the sum of its proper divisors (1).

219320713813 is an equidigital number, since it uses as much as digits as its factorization.

219320713813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 219320713813 in words is "two hundred nineteen billion, three hundred twenty million, seven hundred thirteen thousand, eight hundred thirteen".