271821479543 has 6 divisors (see below), whose sum is σ = 281517847104. Its totient is φ = 262448324264.

The previous prime is 271821479519. The next prime is 271821479581. The reversal of 271821479543 is 345974128172.

It is a happy number.

It is not a de Polignac number, because 271821479543 - 2¹⁸ = 271821217399 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 (271821479443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161605271 + ... + 161606952.

It is an arithmetic number, because the mean of its divisors is an integer number (46919641184).

Almost surely, 2^271821479543 is an apocalyptic number.

271821479543 is a deficient number, since it is larger than the sum of its proper divisors (9696367561).

271821479543 is an equidigital number, since it uses as much as digits as its factorization.

271821479543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323212281 (or 323212252 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The spelling of 271821479543 in words is "two hundred seventy-one billion, eight hundred twenty-one million, four hundred seventy-nine thousand, five hundred forty-three".