20016668299 has 2 divisors, whose sum is σ = 20016668300. Its totient is φ = 20016668298.

The previous prime is 20016668293. The next prime is 20016668317. The reversal of 20016668299 is 99286661002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20016668299 - 2⁹ = 20016667787 is a prime.

It is not a weakly prime, because it can be changed into another prime (20016668293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10008334149 + 10008334150.

It is an arithmetic number, because the mean of its divisors is an integer number (10008334150).

Almost surely, 2^20016668299 is an apocalyptic number.

20016668299 is a deficient number, since it is larger than the sum of its proper divisors (1).

20016668299 is an equidigital number, since it uses as much as digits as its factorization.

20016668299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 20016668299 in words is "twenty billion, sixteen million, six hundred sixty-eight thousand, two hundred ninety-nine".