27375513543 has 20 divisors (see below), whose sum is σ = 46736327440. Its totient is φ = 15643150272.

The previous prime is 27375513521. The next prime is 27375513569. The reversal of 27375513543 is 34531557372.

27375513543 is a `hidden beast` number, since 27 + 3 + 7 + 551 + 35 + 43 = 666.

It is not a de Polignac number, because 27375513543 - 2⁶ = 27375513479 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 (27375513643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24140098 + ... + 24141231.

It is an arithmetic number, because the mean of its divisors is an integer number (2336816372).

Almost surely, 2^27375513543 is an apocalyptic number.

27375513543 is a deficient number, since it is larger than the sum of its proper divisors (19360813897).

27375513543 is an equidigital number, since it uses as much as digits as its factorization.

27375513543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48281348 (or 48281339 counting only the distinct ones).

The product of its digits is 1323000, while the sum is 45.

The spelling of 27375513543 in words is "twenty-seven billion, three hundred seventy-five million, five hundred thirteen thousand, five hundred forty-three".