26507480617 has 2 divisors, whose sum is σ = 26507480618. Its totient is φ = 26507480616.

The previous prime is 26507480609. The next prime is 26507480627. The reversal of 26507480617 is 71608470562.

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., 21368884761 + 5138595856 = 146181^2 + 71684^2 .

It is a cyclic number.

It is not a de Polignac number, because 26507480617 - 2³ = 26507480609 is a prime.

It is not a weakly prime, because it can be changed into another prime (26507480627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13253740308 + 13253740309.

It is an arithmetic number, because the mean of its divisors is an integer number (13253740309).

Almost surely, 2^26507480617 is an apocalyptic number.

It is an amenable number.

26507480617 is a deficient number, since it is larger than the sum of its proper divisors (1).

26507480617 is an equidigital number, since it uses as much as digits as its factorization.

26507480617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 26507480617 in words is "twenty-six billion, five hundred seven million, four hundred eighty thousand, six hundred seventeen".