13543513543 has 16 divisors (see below), whose sum is σ = 15819840000. Its totient is φ = 11354552352.

The previous prime is 13543513541. The next prime is 13543513549. The reversal of 13543513543 is 34531534531.

It is a cyclic number.

It is not a de Polignac number, because 13543513543 - 2¹ = 13543513541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13543513541) 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, 208 + ... + 164581.

It is an arithmetic number, because the mean of its divisors is an integer number (988740000).

Almost surely, 2^13543513543 is an apocalyptic number.

13543513543 is a deficient number, since it is larger than the sum of its proper divisors (2276326457).

13543513543 is a wasteful number, since it uses less digits than its factorization.

13543513543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165054.

The product of its digits is 162000, while the sum is 37.

The spelling of 13543513543 in words is "thirteen billion, five hundred forty-three million, five hundred thirteen thousand, five hundred forty-three".