26127162065197 has 2 divisors, whose sum is σ = 26127162065198. Its totient is φ = 26127162065196.

The previous prime is 26127162065143. The next prime is 26127162065269. The reversal of 26127162065197 is 79156026172162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21052184886756 + 5074977178441 = 4588266^2 + 2252771^2 .

It is a cyclic number.

It is not a de Polignac number, because 26127162065197 - 2¹⁵ = 26127162032429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26127162066197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13063581032598 + 13063581032599.

It is an arithmetic number, because the mean of its divisors is an integer number (13063581032599).

Almost surely, 2^{26127162065197} is an apocalyptic number.

It is an amenable number.

26127162065197 is a deficient number, since it is larger than the sum of its proper divisors (1).

26127162065197 is an equidigital number, since it uses as much as digits as its factorization.

26127162065197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 26127162065197 in words is "twenty-six trillion, one hundred twenty-seven billion, one hundred sixty-two million, sixty-five thousand, one hundred ninety-seven".