56543866834565 has 16 divisors (see below), whose sum is σ = 74028561590016. Its totient is φ = 41118645825600.

The previous prime is 56543866834547. The next prime is 56543866834601.

56543866834565 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56543866834565 - 2⁶ = 56543866834501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56543866834492 and 56543866834501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51532382 + ... + 52618191.

It is an arithmetic number, because the mean of its divisors is an integer number (4626785099376).

Almost surely, 2^{56543866834565} is an apocalyptic number.

56543866834565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56543866834565 is a deficient number, since it is larger than the sum of its proper divisors (17484694755451).

56543866834565 is a wasteful number, since it uses less digits than its factorization.

56543866834565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104160460.

The product of its digits is 7464960000, while the sum is 74.

The spelling of 56543866834565 in words is "fifty-six trillion, five hundred forty-three billion, eight hundred sixty-six million, eight hundred thirty-four thousand, five hundred sixty-five".