11511829321 has 8 divisors (see below), whose sum is σ = 11528649000. Its totient is φ = 11495024640.

The previous prime is 11511829289. The next prime is 11511829349. The reversal of 11511829321 is 12392811511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 972753721 + 10539075600 = 31189^2 + 102660^2 .

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 11511829321 - 2⁵ = 11511829289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11511829391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2841105 + ... + 2845153.

It is an arithmetic number, because the mean of its divisors is an integer number (1441081125).

Almost surely, 2^11511829321 is an apocalyptic number.

It is an amenable number.

11511829321 is a deficient number, since it is larger than the sum of its proper divisors (16819679).

11511829321 is a wasteful number, since it uses less digits than its factorization.

11511829321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7499.

The product of its digits is 4320, while the sum is 34.

The spelling of 11511829321 in words is "eleven billion, five hundred eleven million, eight hundred twenty-nine thousand, three hundred twenty-one".