11721642299 has 2 divisors, whose sum is σ = 11721642300. Its totient is φ = 11721642298.

The previous prime is 11721642253. The next prime is 11721642343. The reversal of 11721642299 is 99224612711.

11721642299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (11721642343) can be obtained adding 11721642299 to its sum of digits (44).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11721642299 is a prime.

It is not a weakly prime, because it can be changed into another prime (11721642199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5860821149 + 5860821150.

It is an arithmetic number, because the mean of its divisors is an integer number (5860821150).

Almost surely, 2^11721642299 is an apocalyptic number.

11721642299 is a deficient number, since it is larger than the sum of its proper divisors (1).

11721642299 is an equidigital number, since it uses as much as digits as its factorization.

11721642299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The spelling of 11721642299 in words is "eleven billion, seven hundred twenty-one million, six hundred forty-two thousand, two hundred ninety-nine".