26056520615618 has 8 divisors (see below), whose sum is σ = 39122040012300. Its totient is φ = 13015840611520.

The previous prime is 26056520615581. The next prime is 26056520615711. The reversal of 26056520615618 is 81651602565062.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24215975266729 + 1840545348889 = 4920973^2 + 1356667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26056520615618.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6209845523 + ... + 6209849718.

Almost surely, 2^{26056520615618} is an apocalyptic number.

26056520615618 is a deficient number, since it is larger than the sum of its proper divisors (13065519396682).

26056520615618 is a wasteful number, since it uses less digits than its factorization.

26056520615618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12419696292.

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 26056520615618 in words is "twenty-six trillion, fifty-six billion, five hundred twenty million, six hundred fifteen thousand, six hundred eighteen".