2271664051369 has 2 divisors, whose sum is σ = 2271664051370. Its totient is φ = 2271664051368.

The previous prime is 2271664051361. The next prime is 2271664051373. The reversal of 2271664051369 is 9631504661722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2193257331225 + 78406720144 = 1480965^2 + 280012^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271664051369 - 2³ = 2271664051361 is a prime.

It is a super-2 number, since 2×2271664051369² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2271664051361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135832025684 + 1135832025685.

It is an arithmetic number, because the mean of its divisors is an integer number (1135832025685).

Almost surely, 2^{2271664051369} is an apocalyptic number.

It is an amenable number.

2271664051369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271664051369 is an equidigital number, since it uses as much as digits as its factorization.

2271664051369 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 2271664051369 in words is "two trillion, two hundred seventy-one billion, six hundred sixty-four million, fifty-one thousand, three hundred sixty-nine".