11789978678 has 8 divisors (see below), whose sum is σ = 17847215760. Its totient is φ = 5840906760.

The previous prime is 11789978671. The next prime is 11789978689. The reversal of 11789978678 is 87687998711.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11789978671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27041018 + ... + 27041453.

It is an arithmetic number, because the mean of its divisors is an integer number (2230901970).

Almost surely, 2^11789978678 is an apocalyptic number.

11789978678 is a deficient number, since it is larger than the sum of its proper divisors (6057237082).

11789978678 is a wasteful number, since it uses less digits than its factorization.

11789978678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54082582.

The product of its digits is 85349376, while the sum is 71.

The spelling of 11789978678 in words is "eleven billion, seven hundred eighty-nine million, nine hundred seventy-eight thousand, six hundred seventy-eight".