5260639561566 has 16 divisors (see below), whose sum is σ = 10584280796544. Its totient is φ = 1743046241624.

The previous prime is 5260639561511. The next prime is 5260639561589. The reversal of 5260639561566 is 6651659360625.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2625068640 + ... + 2625070643.

It is an arithmetic number, because the mean of its divisors is an integer number (661517549784).

Almost surely, 2^{5260639561566} is an apocalyptic number.

5260639561566 is an abundant number, since it is smaller than the sum of its proper divisors (5323641234978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5260639561566 is a wasteful number, since it uses less digits than its factorization.

5260639561566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250139455.

The product of its (nonzero) digits is 52488000, while the sum is 60.

The spelling of 5260639561566 in words is "five trillion, two hundred sixty billion, six hundred thirty-nine million, five hundred sixty-one thousand, five hundred sixty-six".