26563539213 has 12 divisors (see below), whose sum is σ = 38379388320. Its totient is φ = 17704488456.

The previous prime is 26563539173. The next prime is 26563539229. The reversal of 26563539213 is 31293536562.

It is a happy number.

26563539213 is a `hidden beast` number, since 2 + 6 + 5 + 635 + 3 + 9 + 2 + 1 + 3 = 666.

It is not a de Polignac number, because 26563539213 - 2¹⁴ = 26563522829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26563539113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340873 + ... + 411486.

It is an arithmetic number, because the mean of its divisors is an integer number (3198282360).

Almost surely, 2^26563539213 is an apocalyptic number.

It is an amenable number.

26563539213 is a deficient number, since it is larger than the sum of its proper divisors (11815849107).

26563539213 is a wasteful number, since it uses less digits than its factorization.

26563539213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756288 (or 756285 counting only the distinct ones).

The product of its digits is 874800, while the sum is 45.

The spelling of 26563539213 in words is "twenty-six billion, five hundred sixty-three million, five hundred thirty-nine thousand, two hundred thirteen".