21416079318047 has 2 divisors, whose sum is σ = 21416079318048. Its totient is φ = 21416079318046.

The previous prime is 21416079317929. The next prime is 21416079318097. The reversal of 21416079318047 is 74081397061412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21416079318047 - 2³⁴ = 21398899448863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21416079318047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21416079318097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10708039659023 + 10708039659024.

It is an arithmetic number, because the mean of its divisors is an integer number (10708039659024).

Almost surely, 2^{21416079318047} is an apocalyptic number.

21416079318047 is a deficient number, since it is larger than the sum of its proper divisors (1).

21416079318047 is an equidigital number, since it uses as much as digits as its factorization.

21416079318047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 21416079318047 in words is "twenty-one trillion, four hundred sixteen billion, seventy-nine million, three hundred eighteen thousand, forty-seven".