26205630635613 has 64 divisors (see below), whose sum is σ = 42164245557504. Its totient is φ = 14262428160000.

The previous prime is 26205630635593. The next prime is 26205630635719. The reversal of 26205630635613 is 31653603650262.

It is a happy number.

It is not a de Polignac number, because 26205630635613 - 2⁸ = 26205630635357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26205630636613) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128167563 + ... + 128371863.

It is an arithmetic number, because the mean of its divisors is an integer number (658816336836).

Almost surely, 2^{26205630635613} is an apocalyptic number.

It is an amenable number.

26205630635613 is a deficient number, since it is larger than the sum of its proper divisors (15958614921891).

26205630635613 is a wasteful number, since it uses less digits than its factorization.

26205630635613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212446.

The product of its (nonzero) digits is 3499200, while the sum is 48.

The spelling of 26205630635613 in words is "twenty-six trillion, two hundred five billion, six hundred thirty million, six hundred thirty-five thousand, six hundred thirteen".