11543164543 has 16 divisors (see below), whose sum is σ = 12274351200. Its totient is φ = 10817888256.

The previous prime is 11543164519. The next prime is 11543164561. The reversal of 11543164543 is 34546134511.

It is not a de Polignac number, because 11543164543 - 2¹³ = 11543156351 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 (11543167543) 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, 4677796 + ... + 4680262.

It is an arithmetic number, because the mean of its divisors is an integer number (767146950).

Almost surely, 2^11543164543 is an apocalyptic number.

11543164543 is a deficient number, since it is larger than the sum of its proper divisors (731186657).

11543164543 is a wasteful number, since it uses less digits than its factorization.

11543164543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546.

The product of its digits is 86400, while the sum is 37.

The spelling of 11543164543 in words is "eleven billion, five hundred forty-three million, one hundred sixty-four thousand, five hundred forty-three".