2643354271553 has 2 divisors, whose sum is σ = 2643354271554. Its totient is φ = 2643354271552.

The previous prime is 2643354271463. The next prime is 2643354271601. The reversal of 2643354271553 is 3551724533462.

2643354271553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2642390044849 + 964226704 = 1625543^2 + 31052^2 .

It is a cyclic number.

It is not a de Polignac number, because 2643354271553 - 2³² = 2639059304257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2643354471553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321677135776 + 1321677135777.

It is an arithmetic number, because the mean of its divisors is an integer number (1321677135777).

Almost surely, 2^{2643354271553} is an apocalyptic number.

It is an amenable number.

2643354271553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643354271553 is an equidigital number, since it uses as much as digits as its factorization.

2643354271553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072000, while the sum is 50.

The spelling of 2643354271553 in words is "two trillion, six hundred forty-three billion, three hundred fifty-four million, two hundred seventy-one thousand, five hundred fifty-three".