26052717421 has 2 divisors, whose sum is σ = 26052717422. Its totient is φ = 26052717420.

The previous prime is 26052717419. The next prime is 26052717433. The reversal of 26052717421 is 12471725062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13786047396 + 12266670025 = 117414^2 + 110755^2 .

It is a cyclic number.

It is not a de Polignac number, because 26052717421 - 2¹ = 26052717419 is a prime.

Together with 26052717419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26052717401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13026358710 + 13026358711.

It is an arithmetic number, because the mean of its divisors is an integer number (13026358711).

Almost surely, 2^26052717421 is an apocalyptic number.

It is an amenable number.

26052717421 is a deficient number, since it is larger than the sum of its proper divisors (1).

26052717421 is an equidigital number, since it uses as much as digits as its factorization.

26052717421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 26052717421 in words is "twenty-six billion, fifty-two million, seven hundred seventeen thousand, four hundred twenty-one".