13768085781643 has 2 divisors, whose sum is σ = 13768085781644. Its totient is φ = 13768085781642.

The previous prime is 13768085781599. The next prime is 13768085781773. The reversal of 13768085781643 is 34618758086731.

13768085781643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13768085781643 is a prime.

It is not a weakly prime, because it can be changed into another prime (13768085788643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6884042890821 + 6884042890822.

It is an arithmetic number, because the mean of its divisors is an integer number (6884042890822).

Almost surely, 2^{13768085781643} is an apocalyptic number.

13768085781643 is a deficient number, since it is larger than the sum of its proper divisors (1).

13768085781643 is an equidigital number, since it uses as much as digits as its factorization.

13768085781643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162570240, while the sum is 67.

The spelling of 13768085781643 in words is "thirteen trillion, seven hundred sixty-eight billion, eighty-five million, seven hundred eighty-one thousand, six hundred forty-three".