11789720816 has 20 divisors (see below), whose sum is σ = 22861864872. Its totient is φ = 5889884736.

The previous prime is 11789720801. The next prime is 11789720819. The reversal of 11789720816 is 61802798711.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11789720819) 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, 291395 + ... + 329378.

Almost surely, 2^11789720816 is an apocalyptic number.

11789720816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11789720816 is a deficient number, since it is larger than the sum of its proper divisors (11072144056).

11789720816 is a wasteful number, since it uses less digits than its factorization.

11789720816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621968 (or 621962 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 50.

The spelling of 11789720816 in words is "eleven billion, seven hundred eighty-nine million, seven hundred twenty thousand, eight hundred sixteen".