26870634638613 has 8 divisors (see below), whose sum is σ = 39808347612800. Its totient is φ = 17913756425724.

The previous prime is 26870634638599. The next prime is 26870634638621. The reversal of 26870634638613 is 31683643607862.

26870634638613 is a `hidden beast` number, since 2 + 6 + 8 + 7 + 0 + 6 + 3 + 4 + 6 + 3 + 8 + 613 = 666.

It is not a de Polignac number, because 26870634638613 - 2⁸ = 26870634638357 is a prime.

It is a super-2 number, since 2×26870634638613² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26870634638513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497604345133 + ... + 497604345186.

It is an arithmetic number, because the mean of its divisors is an integer number (4976043451600).

Almost surely, 2^{26870634638613} is an apocalyptic number.

It is an amenable number.

26870634638613 is a deficient number, since it is larger than the sum of its proper divisors (12937712974187).

26870634638613 is an equidigital number, since it uses as much as digits as its factorization.

26870634638613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995208690328 (or 995208690322 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 63.

The spelling of 26870634638613 in words is "twenty-six trillion, eight hundred seventy billion, six hundred thirty-four million, six hundred thirty-eight thousand, six hundred thirteen".