11771618678 has 8 divisors (see below), whose sum is σ = 17658726840. Its totient is φ = 5885376400.

The previous prime is 11771618657. The next prime is 11771618693. The reversal of 11771618678 is 87681617711.

11771618678 is digitally balanced in base 5, 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 congruent 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 3 ways as a sum of consecutive naturals, for example, 181343 + ... + 237546.

It is an arithmetic number, because the mean of its divisors is an integer number (2207340855).

Almost surely, 2^11771618678 is an apocalyptic number.

11771618678 is a deficient number, since it is larger than the sum of its proper divisors (5887108162).

11771618678 is a wasteful number, since it uses less digits than its factorization.

11771618678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432942.

The product of its digits is 790272, while the sum is 53.

The spelling of 11771618678 in words is "eleven billion, seven hundred seventy-one million, six hundred eighteen thousand, six hundred seventy-eight".