27938143758073 has 2 divisors, whose sum is σ = 27938143758074. Its totient is φ = 27938143758072.

The previous prime is 27938143757977. The next prime is 27938143758101. The reversal of 27938143758073 is 37085734183972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27564568538809 + 373575219264 = 5250197^2 + 611208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27938143758073 is a prime.

It is not a weakly prime, because it can be changed into another prime (27938143758773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13969071879036 + 13969071879037.

It is an arithmetic number, because the mean of its divisors is an integer number (13969071879037).

Almost surely, 2^{27938143758073} is an apocalyptic number.

It is an amenable number.

27938143758073 is a deficient number, since it is larger than the sum of its proper divisors (1).

27938143758073 is an equidigital number, since it uses as much as digits as its factorization.

27938143758073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 213373440, while the sum is 67.

The spelling of 27938143758073 in words is "twenty-seven trillion, nine hundred thirty-eight billion, one hundred forty-three million, seven hundred fifty-eight thousand, seventy-three".