56117220605 has 8 divisors (see below), whose sum is σ = 67342962264. Its totient is φ = 44892244800.

The previous prime is 56117220589. The next prime is 56117220629. The reversal of 56117220605 is 50602271165.

It can be written as a sum of positive squares in 4 ways, for example, as 2124656836 + 53992563769 = 46094^2 + 232363^2 .

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

It is not a de Polignac number, because 56117220605 - 2⁴ = 56117220589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15566 + ... + 335375.

It is an arithmetic number, because the mean of its divisors is an integer number (8417870283).

Almost surely, 2^56117220605 is an apocalyptic number.

It is an amenable number.

56117220605 is a deficient number, since it is larger than the sum of its proper divisors (11225741659).

56117220605 is a wasteful number, since it uses less digits than its factorization.

56117220605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382927.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 56117220605 in words is "fifty-six billion, one hundred seventeen million, two hundred twenty thousand, six hundred five".