26539343173201 has 2 divisors, whose sum is σ = 26539343173202. Its totient is φ = 26539343173200.

The previous prime is 26539343173199. The next prime is 26539343173229. The reversal of 26539343173201 is 10237134393562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26421409310976 + 117933862225 = 5140176^2 + 343415^2 .

It is a cyclic number.

It is not a de Polignac number, because 26539343173201 - 2¹ = 26539343173199 is a prime.

Together with 26539343173199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26539343173241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13269671586600 + 13269671586601.

It is an arithmetic number, because the mean of its divisors is an integer number (13269671586601).

Almost surely, 2^{26539343173201} is an apocalyptic number.

It is an amenable number.

26539343173201 is a deficient number, since it is larger than the sum of its proper divisors (1).

26539343173201 is an equidigital number, since it uses as much as digits as its factorization.

26539343173201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 49.

The spelling of 26539343173201 in words is "twenty-six trillion, five hundred thirty-nine billion, three hundred forty-three million, one hundred seventy-three thousand, two hundred one".