22191744869719 has 2 divisors, whose sum is σ = 22191744869720. Its totient is φ = 22191744869718.

The previous prime is 22191744869717. The next prime is 22191744869743. The reversal of 22191744869719 is 91796844719122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22191744869719 - 2¹ = 22191744869717 is a prime.

It is a super-2 number, since 2×22191744869719² (a number of 27 digits) contains 22 as substring.

Together with 22191744869717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22191744869717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11095872434859 + 11095872434860.

It is an arithmetic number, because the mean of its divisors is an integer number (11095872434860).

Almost surely, 2^{22191744869719} is an apocalyptic number.

22191744869719 is a deficient number, since it is larger than the sum of its proper divisors (1).

22191744869719 is an equidigital number, since it uses as much as digits as its factorization.

22191744869719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109734912, while the sum is 70.

The spelling of 22191744869719 in words is "twenty-two trillion, one hundred ninety-one billion, seven hundred forty-four million, eight hundred sixty-nine thousand, seven hundred nineteen".