26071967549 has 2 divisors, whose sum is σ = 26071967550. Its totient is φ = 26071967548.

The previous prime is 26071967521. The next prime is 26071967569. The reversal of 26071967549 is 94576917062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16292735449 + 9779232100 = 127643^2 + 98890^2 .

It is a cyclic number.

It is not a de Polignac number, because 26071967549 - 2¹⁶ = 26071902013 is a prime.

It is a super-2 number, since 2×26071967549² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26071967494 and 26071967503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26071967569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13035983774 + 13035983775.

It is an arithmetic number, because the mean of its divisors is an integer number (13035983775).

Almost surely, 2^26071967549 is an apocalyptic number.

It is an amenable number.

26071967549 is a deficient number, since it is larger than the sum of its proper divisors (1).

26071967549 is an equidigital number, since it uses as much as digits as its factorization.

26071967549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 26071967549 in words is "twenty-six billion, seventy-one million, nine hundred sixty-seven thousand, five hundred forty-nine".