21343416023 has 2 divisors, whose sum is σ = 21343416024. Its totient is φ = 21343416022.

The previous prime is 21343416011. The next prime is 21343416077. The reversal of 21343416023 is 32061434312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21343416023 - 2⁸ = 21343415767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21343416923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671708011 + 10671708012.

It is an arithmetic number, because the mean of its divisors is an integer number (10671708012).

Almost surely, 2^21343416023 is an apocalyptic number.

21343416023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21343416023 is an equidigital number, since it uses as much as digits as its factorization.

21343416023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

The spelling of 21343416023 in words is "twenty-one billion, three hundred forty-three million, four hundred sixteen thousand, twenty-three".