26143526505073 has 2 divisors, whose sum is σ = 26143526505074. Its totient is φ = 26143526505072.

The previous prime is 26143526505023. The next prime is 26143526505157. The reversal of 26143526505073 is 37050562534162.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26143096233024 + 430272049 = 5113032^2 + 20743^2 .

It is a cyclic number.

It is not a de Polignac number, because 26143526505073 - 2²⁹ = 26142989634161 is a prime.

It is not a weakly prime, because it can be changed into another prime (26143526505013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13071763252536 + 13071763252537.

It is an arithmetic number, because the mean of its divisors is an integer number (13071763252537).

Almost surely, 2^{26143526505073} is an apocalyptic number.

It is an amenable number.

26143526505073 is a deficient number, since it is larger than the sum of its proper divisors (1).

26143526505073 is an equidigital number, since it uses as much as digits as its factorization.

26143526505073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 49.

The spelling of 26143526505073 in words is "twenty-six trillion, one hundred forty-three billion, five hundred twenty-six million, five hundred five thousand, seventy-three".