26534243663 has 16 divisors (see below), whose sum is σ = 26844720000. Its totient is φ = 26226154080.

The previous prime is 26534243653. The next prime is 26534243669. The reversal of 26534243663 is 36634243562.

It is a cyclic number.

It is not a de Polignac number, because 26534243663 - 2²⁴ = 26517466447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26534243669) 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, 32717528 + ... + 32718338.

It is an arithmetic number, because the mean of its divisors is an integer number (1677795000).

Almost surely, 2^26534243663 is an apocalyptic number.

26534243663 is a deficient number, since it is larger than the sum of its proper divisors (310476337).

26534243663 is a wasteful number, since it uses less digits than its factorization.

26534243663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862.

The product of its digits is 1866240, while the sum is 44.

The spelling of 26534243663 in words is "twenty-six billion, five hundred thirty-four million, two hundred forty-three thousand, six hundred sixty-three".