21416641163 has 2 divisors, whose sum is σ = 21416641164. Its totient is φ = 21416641162.

The previous prime is 21416641079. The next prime is 21416641177. The reversal of 21416641163 is 36114661412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21416641163 - 2⁸ = 21416640907 is a prime.

It is not a weakly prime, because it can be changed into another prime (21416241163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10708320581 + 10708320582.

It is an arithmetic number, because the mean of its divisors is an integer number (10708320582).

Almost surely, 2^21416641163 is an apocalyptic number.

21416641163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21416641163 is an equidigital number, since it uses as much as digits as its factorization.

21416641163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The spelling of 21416641163 in words is "twenty-one billion, four hundred sixteen million, six hundred forty-one thousand, one hundred sixty-three".