21342682807 has 2 divisors, whose sum is σ = 21342682808. Its totient is φ = 21342682806.

The previous prime is 21342682723. The next prime is 21342682817. The reversal of 21342682807 is 70828624312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21342682807 - 2⁷ = 21342682679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21342682817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671341403 + 10671341404.

It is an arithmetic number, because the mean of its divisors is an integer number (10671341404).

Almost surely, 2^21342682807 is an apocalyptic number.

21342682807 is a deficient number, since it is larger than the sum of its proper divisors (1).

21342682807 is an equidigital number, since it uses as much as digits as its factorization.

21342682807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 21342682807 in words is "twenty-one billion, three hundred forty-two million, six hundred eighty-two thousand, eight hundred seven".