2660264666453 has 2 divisors, whose sum is σ = 2660264666454. Its totient is φ = 2660264666452.

The previous prime is 2660264666341. The next prime is 2660264666491. The reversal of 2660264666453 is 3546664620662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2585657568004 + 74607098449 = 1607998^2 + 273143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2660264666453 is a prime.

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 (2660264666753) 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, 1330132333226 + 1330132333227.

It is an arithmetic number, because the mean of its divisors is an integer number (1330132333227).

Almost surely, 2^{2660264666453} is an apocalyptic number.

It is an amenable number.

2660264666453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660264666453 is an equidigital number, since it uses as much as digits as its factorization.

2660264666453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44789760, while the sum is 56.

The spelling of 2660264666453 in words is "two trillion, six hundred sixty billion, two hundred sixty-four million, six hundred sixty-six thousand, four hundred fifty-three".