11987648229 has 8 divisors (see below), whose sum is σ = 15985318720. Its totient is φ = 7990871616.

The previous prime is 11987648219. The next prime is 11987648263. The reversal of 11987648229 is 92284678911.

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

It is not a de Polignac number, because 11987648229 - 2⁹ = 11987647717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11987648219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191524 + ... + 246285.

It is an arithmetic number, because the mean of its divisors is an integer number (1998164840).

Almost surely, 2^11987648229 is an apocalyptic number.

It is an amenable number.

11987648229 is a deficient number, since it is larger than the sum of its proper divisors (3997670491).

11987648229 is an equidigital number, since it uses as much as digits as its factorization.

11987648229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446939.

The product of its digits is 3483648, while the sum is 57.

The spelling of 11987648229 in words is "eleven billion, nine hundred eighty-seven million, six hundred forty-eight thousand, two hundred twenty-nine".