21194463299 has 2 divisors, whose sum is σ = 21194463300. Its totient is φ = 21194463298.

The previous prime is 21194463281. The next prime is 21194463337. The reversal of 21194463299 is 99236449112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21194463299 is a prime.

It is not a weakly prime, because it can be changed into another prime (21194460299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10597231649 + 10597231650.

It is an arithmetic number, because the mean of its divisors is an integer number (10597231650).

Almost surely, 2^21194463299 is an apocalyptic number.

21194463299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21194463299 is an equidigital number, since it uses as much as digits as its factorization.

21194463299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 50.

The spelling of 21194463299 in words is "twenty-one billion, one hundred ninety-four million, four hundred sixty-three thousand, two hundred ninety-nine".