20710388203187 has 2 divisors, whose sum is σ = 20710388203188. Its totient is φ = 20710388203186.

The previous prime is 20710388203103. The next prime is 20710388203189. The reversal of 20710388203187 is 78130288301702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20710388203187 is a prime.

Together with 20710388203189, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20710388203189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10355194101593 + 10355194101594.

It is an arithmetic number, because the mean of its divisors is an integer number (10355194101594).

Almost surely, 2^{20710388203187} is an apocalyptic number.

20710388203187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20710388203187 is an equidigital number, since it uses as much as digits as its factorization.

20710388203187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 20710388203187 in words is "twenty trillion, seven hundred ten billion, three hundred eighty-eight million, two hundred three thousand, one hundred eighty-seven".