11729323205 has 16 divisors (see below), whose sum is σ = 14432151024. Its totient is φ = 9147740160.

The previous prime is 11729323183. The next prime is 11729323211. The reversal of 11729323205 is 50232392711.

It is a Cunningham number, because it is equal to 108302²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 2815684 + 11726507521 = 1678^2 + 108289^2 .

It is not a de Polignac number, because 11729323205 - 2¹⁰ = 11729322181 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99356 + ... + 182565.

It is an arithmetic number, because the mean of its divisors is an integer number (902009439).

Almost surely, 2^11729323205 is an apocalyptic number.

It is an amenable number.

11729323205 is a deficient number, since it is larger than the sum of its proper divisors (2702827819).

11729323205 is a wasteful number, since it uses less digits than its factorization.

11729323205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282136.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 11729323205 in words is "eleven billion, seven hundred twenty-nine million, three hundred twenty-three thousand, two hundred five".