11663451115 has 8 divisors (see below), whose sum is σ = 14047789248. Its totient is φ = 9296328960.

The previous prime is 11663451071. The next prime is 11663451127. The reversal of 11663451115 is 51115436611.

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

It is a de Polignac number, because none of the positive numbers 2^k-11663451115 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 4302502 + ... + 4305211.

It is an arithmetic number, because the mean of its divisors is an integer number (1755973656).

Almost surely, 2^11663451115 is an apocalyptic number.

11663451115 is a deficient number, since it is larger than the sum of its proper divisors (2384338133).

11663451115 is an equidigital number, since it uses as much as digits as its factorization.

11663451115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8607989.

The product of its digits is 10800, while the sum is 34.

Adding to 11663451115 its reverse (51115436611), we get a palindrome (62778887726).

The spelling of 11663451115 in words is "eleven billion, six hundred sixty-three million, four hundred fifty-one thousand, one hundred fifteen".