27843416481 has 4 divisors (see below), whose sum is σ = 37124555312. Its totient is φ = 18562277652.

The previous prime is 27843416477. The next prime is 27843416509. The reversal of 27843416481 is 18461434872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27843416481 - 2² = 27843416477 is a prime.

It is a super-2 number, since 2×27843416481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27843416481.

It is not an unprimeable number, because it can be changed into a prime (27843416431) 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, 4640569411 + ... + 4640569416.

It is an arithmetic number, because the mean of its divisors is an integer number (9281138828).

Almost surely, 2^27843416481 is an apocalyptic number.

It is an amenable number.

27843416481 is a deficient number, since it is larger than the sum of its proper divisors (9281138831).

27843416481 is an equidigital number, since it uses as much as digits as its factorization.

27843416481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281138830.

The product of its digits is 1032192, while the sum is 48.

The spelling of 27843416481 in words is "twenty-seven billion, eight hundred forty-three million, four hundred sixteen thousand, four hundred eighty-one".