21743253855107 has 2 divisors, whose sum is σ = 21743253855108. Its totient is φ = 21743253855106.

The previous prime is 21743253854983. The next prime is 21743253855151. The reversal of 21743253855107 is 70155835234712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21743253855107 - 2²⁶ = 21743186746243 is a prime.

It is not a weakly prime, because it can be changed into another prime (21743253855907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10871626927553 + 10871626927554.

It is an arithmetic number, because the mean of its divisors is an integer number (10871626927554).

Almost surely, 2^{21743253855107} is an apocalyptic number.

21743253855107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21743253855107 is an equidigital number, since it uses as much as digits as its factorization.

21743253855107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056000, while the sum is 53.

The spelling of 21743253855107 in words is "twenty-one trillion, seven hundred forty-three billion, two hundred fifty-three million, eight hundred fifty-five thousand, one hundred seven".