11513719205 has 8 divisors (see below), whose sum is σ = 14077151352. Its totient is φ = 9037183168.

The previous prime is 11513719169. The next prime is 11513719219. The reversal of 11513719205 is 50291731511.

11513719205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 107302²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 86750596 + 11426968609 = 9314^2 + 106897^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11513719205 - 2¹⁸ = 11513457061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 21723734 + ... + 21724263.

It is an arithmetic number, because the mean of its divisors is an integer number (1759643919).

Almost surely, 2^11513719205 is an apocalyptic number.

It is an amenable number.

11513719205 is a deficient number, since it is larger than the sum of its proper divisors (2563432147).

11513719205 is an equidigital number, since it uses as much as digits as its factorization.

11513719205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43448055.

The product of its (nonzero) digits is 9450, while the sum is 35.

The spelling of 11513719205 in words is "eleven billion, five hundred thirteen million, seven hundred nineteen thousand, two hundred five".