26121041017 has 2 divisors, whose sum is σ = 26121041018. Its totient is φ = 26121041016.

The previous prime is 26121041003. The next prime is 26121041039. The reversal of 26121041017 is 71014012162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23530332816 + 2590708201 = 153396^2 + 50899^2 .

It is a cyclic number.

It is not a de Polignac number, because 26121041017 - 2¹⁹ = 26120516729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26121040982 and 26121041000.

It is not a weakly prime, because it can be changed into another prime (26121041047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13060520508 + 13060520509.

It is an arithmetic number, because the mean of its divisors is an integer number (13060520509).

Almost surely, 2^26121041017 is an apocalyptic number.

It is an amenable number.

26121041017 is a deficient number, since it is larger than the sum of its proper divisors (1).

26121041017 is an equidigital number, since it uses as much as digits as its factorization.

26121041017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 26121041017 its reverse (71014012162), we get a palindrome (97135053179).

The spelling of 26121041017 in words is "twenty-six billion, one hundred twenty-one million, forty-one thousand, seventeen".