20078716727 has 2 divisors, whose sum is σ = 20078716728. Its totient is φ = 20078716726.

The previous prime is 20078716687. The next prime is 20078716729. The reversal of 20078716727 is 72761787002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20078716727 - 2¹⁶ = 20078651191 is a prime.

Together with 20078716729, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20078716729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10039358363 + 10039358364.

It is an arithmetic number, because the mean of its divisors is an integer number (10039358364).

Almost surely, 2^20078716727 is an apocalyptic number.

20078716727 is a deficient number, since it is larger than the sum of its proper divisors (1).

20078716727 is an equidigital number, since it uses as much as digits as its factorization.

20078716727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460992, while the sum is 47.

The spelling of 20078716727 in words is "twenty billion, seventy-eight million, seven hundred sixteen thousand, seven hundred twenty-seven".