16541764191269 has 2 divisors, whose sum is σ = 16541764191270. Its totient is φ = 16541764191268.

The previous prime is 16541764191217. The next prime is 16541764191287. The reversal of 16541764191269 is 96219146714561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15553952822500 + 987811368769 = 3943850^2 + 993887^2 .

It is a cyclic number.

It is not a de Polignac number, because 16541764191269 - 2²⁰ = 16541763142693 is a prime.

It is a super-2 number, since 2×16541764191269² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16541764191209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8270882095634 + 8270882095635.

It is an arithmetic number, because the mean of its divisors is an integer number (8270882095635).

Almost surely, 2^{16541764191269} is an apocalyptic number.

It is an amenable number.

16541764191269 is a deficient number, since it is larger than the sum of its proper divisors (1).

16541764191269 is an equidigital number, since it uses as much as digits as its factorization.

16541764191269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 62.

The spelling of 16541764191269 in words is "sixteen trillion, five hundred forty-one billion, seven hundred sixty-four million, one hundred ninety-one thousand, two hundred sixty-nine".