271821479545 has 64 divisors (see below), whose sum is σ = 415548112896. Its totient is φ = 165753146880.

The previous prime is 271821479519. The next prime is 271821479581. The reversal of 271821479545 is 545974128172.

It is not a de Polignac number, because 271821479545 - 2¹¹ = 271821477497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 53431992 + ... + 53437078.

It is an arithmetic number, because the mean of its divisors is an integer number (6492939264).

Almost surely, 2^271821479545 is an apocalyptic number.

It is an amenable number.

271821479545 is a deficient number, since it is larger than the sum of its proper divisors (143726633351).

271821479545 is a wasteful number, since it uses less digits than its factorization.

271821479545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8110.

The product of its digits is 5644800, while the sum is 55.

The spelling of 271821479545 in words is "two hundred seventy-one billion, eight hundred twenty-one million, four hundred seventy-nine thousand, five hundred forty-five".