56565656563 has 6 divisors (see below), whose sum is σ = 61251569124. Its totient is φ = 52214452056.

The previous prime is 56565656531. The next prime is 56565656591. The reversal of 56565656563 is 36565656565.

It is not a de Polignac number, because 56565656563 - 2⁵ = 56565656531 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56565656498 and 56565656507.

It is not an unprimeable number, because it can be changed into a prime (56565656593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167353845 + ... + 167354182.

It is an arithmetic number, because the mean of its divisors is an integer number (10208594854).

Almost surely, 2^56565656563 is an apocalyptic number.

56565656563 is a deficient number, since it is larger than the sum of its proper divisors (4685912561).

56565656563 is a wasteful number, since it uses less digits than its factorization.

56565656563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334708053 (or 334708040 counting only the distinct ones).

The product of its digits is 72900000, while the sum is 58.

The spelling of 56565656563 in words is "fifty-six billion, five hundred sixty-five million, six hundred fifty-six thousand, five hundred sixty-three".