21343106363 has 2 divisors, whose sum is σ = 21343106364. Its totient is φ = 21343106362.

The previous prime is 21343106347. The next prime is 21343106383. The reversal of 21343106363 is 36360134312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21343106363 - 2⁴ = 21343106347 is a prime.

It is not a weakly prime, because it can be changed into another prime (21343106383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671553181 + 10671553182.

It is an arithmetic number, because the mean of its divisors is an integer number (10671553182).

Almost surely, 2^21343106363 is an apocalyptic number.

21343106363 is a deficient number, since it is larger than the sum of its proper divisors (1).

21343106363 is an equidigital number, since it uses as much as digits as its factorization.

21343106363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 32.

The spelling of 21343106363 in words is "twenty-one billion, three hundred forty-three million, one hundred six thousand, three hundred sixty-three".