21598332799 has 2 divisors, whose sum is σ = 21598332800. Its totient is φ = 21598332798.

The previous prime is 21598332793. The next prime is 21598332809. The reversal of 21598332799 is 99723389512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21598332799 - 2¹⁹ = 21597808511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21598332793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10799166399 + 10799166400.

It is an arithmetic number, because the mean of its divisors is an integer number (10799166400).

Almost surely, 2^21598332799 is an apocalyptic number.

21598332799 is a deficient number, since it is larger than the sum of its proper divisors (1).

21598332799 is an equidigital number, since it uses as much as digits as its factorization.

21598332799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 58.

The spelling of 21598332799 in words is "twenty-one billion, five hundred ninety-eight million, three hundred thirty-two thousand, seven hundred ninety-nine".