18768716735 has 4 divisors (see below), whose sum is σ = 22522460088. Its totient is φ = 15014973384.

The previous prime is 18768716719. The next prime is 18768716761. The reversal of 18768716735 is 53761786781.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53761786781 = 4157 ⋅12932833.

It is a cyclic number.

It is not a de Polignac number, because 18768716735 - 2⁴ = 18768716719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1876871669 + ... + 1876871678.

It is an arithmetic number, because the mean of its divisors is an integer number (5630615022).

Almost surely, 2^18768716735 is an apocalyptic number.

18768716735 is a deficient number, since it is larger than the sum of its proper divisors (3753743353).

18768716735 is an equidigital number, since it uses as much as digits as its factorization.

18768716735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753743352.

The product of its digits is 11854080, while the sum is 59.

The spelling of 18768716735 in words is "eighteen billion, seven hundred sixty-eight million, seven hundred sixteen thousand, seven hundred thirty-five".