26285562617 has 2 divisors, whose sum is σ = 26285562618. Its totient is φ = 26285562616.

The previous prime is 26285562553. The next prime is 26285562623. The reversal of 26285562617 is 71626558262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26284191376 + 1371241 = 162124^2 + 1171^2 .

It is a cyclic number.

It is not a de Polignac number, because 26285562617 - 2⁶ = 26285562553 is a prime.

It is not a weakly prime, because it can be changed into another prime (26285562637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13142781308 + 13142781309.

It is an arithmetic number, because the mean of its divisors is an integer number (13142781309).

Almost surely, 2^26285562617 is an apocalyptic number.

It is an amenable number.

26285562617 is a deficient number, since it is larger than the sum of its proper divisors (1).

26285562617 is an equidigital number, since it uses as much as digits as its factorization.

26285562617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 50.

The spelling of 26285562617 in words is "twenty-six billion, two hundred eighty-five million, five hundred sixty-two thousand, six hundred seventeen".