11643625018 has 16 divisors (see below), whose sum is σ = 18251228736. Its totient is φ = 5560616160.

The previous prime is 11643625001. The next prime is 11643625031. The reversal of 11643625018 is 81052634611.

It is a happy number.

11643625018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 151371 + ... + 214942.

It is an arithmetic number, because the mean of its divisors is an integer number (1140701796).

Almost surely, 2^11643625018 is an apocalyptic number.

11643625018 is a deficient number, since it is larger than the sum of its proper divisors (6607603718).

11643625018 is a wasteful number, since it uses less digits than its factorization.

11643625018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367029.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 11643625018 in words is "eleven billion, six hundred forty-three million, six hundred twenty-five thousand, eighteen".