11718618671 has 8 divisors (see below), whose sum is σ = 12124189200. Its totient is φ = 11313146880.

The previous prime is 11718618661. The next prime is 11718618673. The reversal of 11718618671 is 17681681711.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11718618671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11718618673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281216 + ... + 320186.

It is an arithmetic number, because the mean of its divisors is an integer number (1515523650).

Almost surely, 2^11718618671 is an apocalyptic number.

11718618671 is a deficient number, since it is larger than the sum of its proper divisors (405570529).

11718618671 is a wasteful number, since it uses less digits than its factorization.

11718618671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49369.

The product of its digits is 112896, while the sum is 47.

The spelling of 11718618671 in words is "eleven billion, seven hundred eighteen million, six hundred eighteen thousand, six hundred seventy-one".