56565555556565 has 32 divisors (see below), whose sum is σ = 74184269043456. Its totient is φ = 41063707560960.

The previous prime is 56565555556561. The next prime is 56565555556571.

56565555556565 is nontrivially palindromic in base 10.

56565555556565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56565555556565 - 2² = 56565555556561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56565555556492 and 56565555556501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56565555556561) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 251577584 + ... + 251802326.

It is an arithmetic number, because the mean of its divisors is an integer number (2318258407608).

Almost surely, 2^{56565555556565} is an apocalyptic number.

56565555556565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56565555556565 is a deficient number, since it is larger than the sum of its proper divisors (17618713486891).

56565555556565 is a wasteful number, since it uses less digits than its factorization.

56565555556565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233069.

The product of its digits is 12656250000, while the sum is 74.

The spelling of 56565555556565 in words is "fifty-six trillion, five hundred sixty-five billion, five hundred fifty-five million, five hundred fifty-six thousand, five hundred sixty-five".