11545412543 has 16 divisors (see below), whose sum is σ = 13260509184. Its totient is φ = 9846869760.

The previous prime is 11545412539. The next prime is 11545412563. The reversal of 11545412543 is 34521454511.

It is a happy number.

It is not a de Polignac number, because 11545412543 - 2² = 11545412539 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 (11545412513) 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, 1317071 + ... + 1325807.

It is an arithmetic number, because the mean of its divisors is an integer number (828781824).

Almost surely, 2^11545412543 is an apocalyptic number.

11545412543 is a deficient number, since it is larger than the sum of its proper divisors (1715096641).

11545412543 is an equidigital number, since it uses as much as digits as its factorization.

11545412543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9662.

The product of its digits is 48000, while the sum is 35.

The spelling of 11545412543 in words is "eleven billion, five hundred forty-five million, four hundred twelve thousand, five hundred forty-three".