19938806070727 has 2 divisors, whose sum is σ = 19938806070728. Its totient is φ = 19938806070726.

The previous prime is 19938806070607. The next prime is 19938806070773. The reversal of 19938806070727 is 72707060883991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19938806070727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19938806070787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9969403035363 + 9969403035364.

It is an arithmetic number, because the mean of its divisors is an integer number (9969403035364).

Almost surely, 2^{19938806070727} is an apocalyptic number.

19938806070727 is a deficient number, since it is larger than the sum of its proper divisors (1).

19938806070727 is an equidigital number, since it uses as much as digits as its factorization.

19938806070727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64012032, while the sum is 67.

The spelling of 19938806070727 in words is "nineteen trillion, nine hundred thirty-eight billion, eight hundred six million, seventy thousand, seven hundred twenty-seven".