16785682649423 has 2 divisors, whose sum is σ = 16785682649424. Its totient is φ = 16785682649422.

The previous prime is 16785682649387. The next prime is 16785682649441. The reversal of 16785682649423 is 32494628658761.

16785682649423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16785682649423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16785682649023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8392841324711 + 8392841324712.

It is an arithmetic number, because the mean of its divisors is an integer number (8392841324712).

Almost surely, 2^{16785682649423} is an apocalyptic number.

16785682649423 is a deficient number, since it is larger than the sum of its proper divisors (1).

16785682649423 is an equidigital number, since it uses as much as digits as its factorization.

16785682649423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 836075520, while the sum is 71.

The spelling of 16785682649423 in words is "sixteen trillion, seven hundred eighty-five billion, six hundred eighty-two million, six hundred forty-nine thousand, four hundred twenty-three".