11809799929 has 2 divisors, whose sum is σ = 11809799930. Its totient is φ = 11809799928.

The previous prime is 11809799899. The next prime is 11809800031. The reversal of 11809799929 is 92999790811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9130184704 + 2679615225 = 95552^2 + 51765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11809799929 is a prime.

It is not a weakly prime, because it can be changed into another prime (11809790929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5904899964 + 5904899965.

It is an arithmetic number, because the mean of its divisors is an integer number (5904899965).

Almost surely, 2^11809799929 is an apocalyptic number.

It is an amenable number.

11809799929 is a deficient number, since it is larger than the sum of its proper divisors (1).

11809799929 is an equidigital number, since it uses as much as digits as its factorization.

11809799929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6613488, while the sum is 64.

The spelling of 11809799929 in words is "eleven billion, eight hundred nine million, seven hundred ninety-nine thousand, nine hundred twenty-nine".