18768686701 has 2 divisors, whose sum is σ = 18768686702. Its totient is φ = 18768686700.

The previous prime is 18768686689. The next prime is 18768686731. The reversal of 18768686701 is 10768686781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11256997801 + 7511688900 = 106099^2 + 86670^2 .

It is a cyclic number.

It is not a de Polignac number, because 18768686701 - 2⁵ = 18768686669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18768686731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9384343350 + 9384343351.

It is an arithmetic number, because the mean of its divisors is an integer number (9384343351).

Almost surely, 2^18768686701 is an apocalyptic number.

It is an amenable number.

18768686701 is a deficient number, since it is larger than the sum of its proper divisors (1).

18768686701 is an equidigital number, since it uses as much as digits as its factorization.

18768686701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5419008, while the sum is 58.

The spelling of 18768686701 in words is "eighteen billion, seven hundred sixty-eight million, six hundred eighty-six thousand, seven hundred one".