219344491753 has 2 divisors, whose sum is σ = 219344491754. Its totient is φ = 219344491752.

The previous prime is 219344491711. The next prime is 219344491757. The reversal of 219344491753 is 357194443912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210206661289 + 9137830464 = 458483^2 + 95592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219344491753 is a prime.

It is a super-2 number, since 2×219344491753² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 219344491753.

It is not a weakly prime, because it can be changed into another prime (219344491757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109672245876 + 109672245877.

It is an arithmetic number, because the mean of its divisors is an integer number (109672245877).

Almost surely, 2^219344491753 is an apocalyptic number.

It is an amenable number.

219344491753 is a deficient number, since it is larger than the sum of its proper divisors (1).

219344491753 is an equidigital number, since it uses as much as digits as its factorization.

219344491753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 52.

The spelling of 219344491753 in words is "two hundred nineteen billion, three hundred forty-four million, four hundred ninety-one thousand, seven hundred fifty-three".