11643579687 has 8 divisors (see below), whose sum is σ = 15561826560. Its totient is φ = 7743859640.

The previous prime is 11643579683. The next prime is 11643579697. The reversal of 11643579687 is 78697534611.

It is a happy number.

11643579687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11643579687 - 2² = 11643579683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11643579683) 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 7 ways as a sum of consecutive naturals, for example, 4630239 + ... + 4632752.

It is an arithmetic number, because the mean of its divisors is an integer number (1945228320).

Almost surely, 2^11643579687 is an apocalyptic number.

11643579687 is a deficient number, since it is larger than the sum of its proper divisors (3918246873).

11643579687 is an equidigital number, since it uses as much as digits as its factorization.

11643579687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9263413.

The product of its digits is 7620480, while the sum is 57.

The spelling of 11643579687 in words is "eleven billion, six hundred forty-three million, five hundred seventy-nine thousand, six hundred eighty-seven".