26275566663 has 12 divisors (see below), whose sum is σ = 38101279008. Its totient is φ = 17448883200.

The previous prime is 26275566661. The next prime is 26275566731. The reversal of 26275566663 is 36666557262.

It is not a de Polignac number, because 26275566663 - 2¹ = 26275566661 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26275566661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5677663 + ... + 5682288.

It is an arithmetic number, because the mean of its divisors is an integer number (3175106584).

Almost surely, 2^26275566663 is an apocalyptic number.

26275566663 is a deficient number, since it is larger than the sum of its proper divisors (11825712345).

26275566663 is a wasteful number, since it uses less digits than its factorization.

26275566663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11360214 (or 11360211 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 54.

The spelling of 26275566663 in words is "twenty-six billion, two hundred seventy-five million, five hundred sixty-six thousand, six hundred sixty-three".