27265898605 has 72 divisors (see below), whose sum is σ = 38294194176. Its totient is φ = 18619191360.

The previous prime is 27265898563. The next prime is 27265898609. The reversal of 27265898605 is 50689856272.

It is not a de Polignac number, because 27265898605 - 2¹⁹ = 27265374317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27265898605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27265898609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 27736944 + ... + 27737926.

It is an arithmetic number, because the mean of its divisors is an integer number (531863808).

Almost surely, 2^27265898605 is an apocalyptic number.

It is an amenable number.

27265898605 is a deficient number, since it is larger than the sum of its proper divisors (11028295571).

27265898605 is a wasteful number, since it uses less digits than its factorization.

27265898605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 27265898605 in words is "twenty-seven billion, two hundred sixty-five million, eight hundred ninety-eight thousand, six hundred five".