26272279549 has 2 divisors, whose sum is σ = 26272279550. Its totient is φ = 26272279548.

The previous prime is 26272279547. The next prime is 26272279577. The reversal of 26272279549 is 94597227262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15106130649 + 11166148900 = 122907^2 + 105670^2 .

It is a cyclic number.

It is not a de Polignac number, because 26272279549 - 2¹ = 26272279547 is a prime.

Together with 26272279547, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26272279549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26272279547) 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, 13136139774 + 13136139775.

It is an arithmetic number, because the mean of its divisors is an integer number (13136139775).

Almost surely, 2^26272279549 is an apocalyptic number.

It is an amenable number.

26272279549 is a deficient number, since it is larger than the sum of its proper divisors (1).

26272279549 is an equidigital number, since it uses as much as digits as its factorization.

26272279549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The spelling of 26272279549 in words is "twenty-six billion, two hundred seventy-two million, two hundred seventy-nine thousand, five hundred forty-nine".