26268195309 has 16 divisors (see below), whose sum is σ = 36994873344. Its totient is φ = 16553098800.

The previous prime is 26268195307. The next prime is 26268195341. The reversal of 26268195309 is 90359186262.

It is not a de Polignac number, because 26268195309 - 2¹ = 26268195307 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26268195307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3280347 + ... + 3288344.

It is an arithmetic number, because the mean of its divisors is an integer number (2312179584).

Almost surely, 2^26268195309 is an apocalyptic number.

It is an amenable number.

26268195309 is a deficient number, since it is larger than the sum of its proper divisors (10726678035).

26268195309 is a wasteful number, since it uses less digits than its factorization.

26268195309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6568768.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 26268195309 in words is "twenty-six billion, two hundred sixty-eight million, one hundred ninety-five thousand, three hundred nine".