11551594099 has 4 divisors (see below), whose sum is σ = 11949924960. Its totient is φ = 11153263240.

The previous prime is 11551594091. The next prime is 11551594111. The reversal of 11551594099 is 99049515511.

11551594099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99049515511 = 1097 ⋅90291263.

It is a cyclic number.

It is not a de Polignac number, because 11551594099 - 2³ = 11551594091 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11551594091) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 199165387 + ... + 199165444.

It is an arithmetic number, because the mean of its divisors is an integer number (2987481240).

Almost surely, 2^11551594099 is an apocalyptic number.

11551594099 is a deficient number, since it is larger than the sum of its proper divisors (398330861).

11551594099 is an equidigital number, since it uses as much as digits as its factorization.

11551594099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398330860.

The product of its (nonzero) digits is 364500, while the sum is 49.

The spelling of 11551594099 in words is "eleven billion, five hundred fifty-one million, five hundred ninety-four thousand, ninety-nine".