11543132034421 has 4 divisors (see below), whose sum is σ = 12431065267852. Its totient is φ = 10655198800992.

The previous prime is 11543132034367. The next prime is 11543132034437. The reversal of 11543132034421 is 12443023134511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7475226255396 + 4067905779025 = 2734086^2 + 2016905^2 .

It is a cyclic number.

It is not a de Polignac number, because 11543132034421 - 2¹⁹ = 11543131510133 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 (11543132031421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443966616696 + ... + 443966616721.

It is an arithmetic number, because the mean of its divisors is an integer number (3107766316963).

Almost surely, 2^{11543132034421} is an apocalyptic number.

It is an amenable number.

11543132034421 is a deficient number, since it is larger than the sum of its proper divisors (887933233431).

11543132034421 is an equidigital number, since it uses as much as digits as its factorization.

11543132034421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887933233430.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 11543132034421 its reverse (12443023134511), we get a palindrome (23986155168932).

The spelling of 11543132034421 in words is "eleven trillion, five hundred forty-three billion, one hundred thirty-two million, thirty-four thousand, four hundred twenty-one".