11545273543 has 2 divisors, whose sum is σ = 11545273544. Its totient is φ = 11545273542.

The previous prime is 11545273541. The next prime is 11545273567. The reversal of 11545273543 is 34537254511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11545273543 - 2¹ = 11545273541 is a prime.

Together with 11545273541, it forms a pair of twin primes.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 11545273496 and 11545273505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11545273541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5772636771 + 5772636772.

It is an arithmetic number, because the mean of its divisors is an integer number (5772636772).

Almost surely, 2^11545273543 is an apocalyptic number.

11545273543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11545273543 is an equidigital number, since it uses as much as digits as its factorization.

11545273543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 40.

The spelling of 11545273543 in words is "eleven billion, five hundred forty-five million, two hundred seventy-three thousand, five hundred forty-three".