26927961205 has 16 divisors (see below), whose sum is σ = 32467100400. Its totient is φ = 21440171520.

The previous prime is 26927961199. The next prime is 26927961209. The reversal of 26927961205 is 50216972962.

It can be written as a sum of positive squares in 8 ways, for example, as 165945924 + 26762015281 = 12882^2 + 163591^2 .

It is not a de Polignac number, because 26927961205 - 2³ = 26927961197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26927961209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1363441 + ... + 1383049.

It is an arithmetic number, because the mean of its divisors is an integer number (2029193775).

Almost surely, 2^26927961205 is an apocalyptic number.

It is an amenable number.

26927961205 is a deficient number, since it is larger than the sum of its proper divisors (5539139195).

26927961205 is a wasteful number, since it uses less digits than its factorization.

26927961205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20904.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 26927961205 in words is "twenty-six billion, nine hundred twenty-seven million, nine hundred sixty-one thousand, two hundred five".