26561652363213 has 16 divisors (see below), whose sum is σ = 40668558643200. Its totient is φ = 15250709490480.

The previous prime is 26561652363163. The next prime is 26561652363227. The reversal of 26561652363213 is 31236325616562.

It is not a de Polignac number, because 26561652363213 - 2³⁸ = 26286774456269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26561652363263) 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, 21181540333 + ... + 21181541586.

It is an arithmetic number, because the mean of its divisors is an integer number (2541784915200).

Almost surely, 2^{26561652363213} is an apocalyptic number.

It is an amenable number.

26561652363213 is a deficient number, since it is larger than the sum of its proper divisors (14106906279987).

26561652363213 is a wasteful number, since it uses less digits than its factorization.

26561652363213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42363081952.

The product of its digits is 6998400, while the sum is 51.

Adding to 26561652363213 its reverse (31236325616562), we get a palindrome (57797977979775).

The spelling of 26561652363213 in words is "twenty-six trillion, five hundred sixty-one billion, six hundred fifty-two million, three hundred sixty-three thousand, two hundred thirteen".