21010533369743 has 2 divisors, whose sum is σ = 21010533369744. Its totient is φ = 21010533369742.

The previous prime is 21010533369737. The next prime is 21010533369797. The reversal of 21010533369743 is 34796333501012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21010533369743 - 2⁴⁰ = 19911021741967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010533369643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505266684871 + 10505266684872.

It is an arithmetic number, because the mean of its divisors is an integer number (10505266684872).

Almost surely, 2^{21010533369743} is an apocalyptic number.

21010533369743 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010533369743 is an equidigital number, since it uses as much as digits as its factorization.

21010533369743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 47.

The spelling of 21010533369743 in words is "twenty-one trillion, ten billion, five hundred thirty-three million, three hundred sixty-nine thousand, seven hundred forty-three".