56543434565 has 8 divisors (see below), whose sum is σ = 67857679608. Its totient is φ = 45231042240.

The previous prime is 56543434559. The next prime is 56543434583.

56543434565 is nontrivially palindromic in base 10.

56543434565 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 4394231521 + 52149203044 = 66289^2 + 228362^2 .

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

It is not a de Polignac number, because 56543434565 - 2²⁰ = 56542385989 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395126 + ... + 518855.

It is an arithmetic number, because the mean of its divisors is an integer number (8482209951).

Almost surely, 2^56543434565 is an apocalyptic number.

It is an amenable number.

56543434565 is a deficient number, since it is larger than the sum of its proper divisors (11314245043).

56543434565 is a wasteful number, since it uses less digits than its factorization.

56543434565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926359.

The product of its digits is 12960000, while the sum is 50.

The spelling of 56543434565 in words is "fifty-six billion, five hundred forty-three million, four hundred thirty-four thousand, five hundred sixty-five".