26159347859209 has 2 divisors, whose sum is σ = 26159347859210. Its totient is φ = 26159347859208.

The previous prime is 26159347859189. The next prime is 26159347859261. The reversal of 26159347859209 is 90295874395162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16692821919225 + 9466525939984 = 4085685^2 + 3076772^2 .

It is a cyclic number.

It is not a de Polignac number, because 26159347859209 - 2¹⁹ = 26159347334921 is a prime.

It is a super-2 number, since 2×26159347859209² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26159347859509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13079673929604 + 13079673929605.

It is an arithmetic number, because the mean of its divisors is an integer number (13079673929605).

It is a 1-persistent number, because it is pandigital, but 2⋅26159347859209 = 52318695718418 is not.

Almost surely, 2^{26159347859209} is an apocalyptic number.

It is an amenable number.

26159347859209 is a deficient number, since it is larger than the sum of its proper divisors (1).

26159347859209 is an equidigital number, since it uses as much as digits as its factorization.

26159347859209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 293932800, while the sum is 70.

The spelling of 26159347859209 in words is "twenty-six trillion, one hundred fifty-nine billion, three hundred forty-seven million, eight hundred fifty-nine thousand, two hundred nine".