13255564543 has 16 divisors (see below), whose sum is σ = 14326845120. Its totient is φ = 12191751936.

The previous prime is 13255564477. The next prime is 13255564577. The reversal of 13255564543 is 34546555231.

It is not a de Polignac number, because 13255564543 - 2²¹ = 13253467391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13255564543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13255564843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5006446 + ... + 5009092.

It is an arithmetic number, because the mean of its divisors is an integer number (895427820).

Almost surely, 2^13255564543 is an apocalyptic number.

13255564543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13255564543 is a deficient number, since it is larger than the sum of its proper divisors (1071280577).

13255564543 is a wasteful number, since it uses less digits than its factorization.

13255564543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906.

The product of its digits is 1080000, while the sum is 43.

The spelling of 13255564543 in words is "thirteen billion, two hundred fifty-five million, five hundred sixty-four thousand, five hundred forty-three".