1327745479481 has 4 divisors (see below), whose sum is σ = 1331987478132. Its totient is φ = 1323503480832.

The previous prime is 1327745479457. The next prime is 1327745479523. The reversal of 1327745479481 is 1849745477231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 530189315881 + 797556163600 = 728141^2 + 893060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1327745479481 - 2¹⁰ = 1327745478457 is a prime.

It is a super-2 number, since 2×1327745479481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1327745479441) 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, 2120998856 + ... + 2120999481.

It is an arithmetic number, because the mean of its divisors is an integer number (332996869533).

Almost surely, 2^{1327745479481} is an apocalyptic number.

It is an amenable number.

1327745479481 is a deficient number, since it is larger than the sum of its proper divisors (4241998651).

1327745479481 is an equidigital number, since it uses as much as digits as its factorization.

1327745479481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241998650.

The product of its digits is 47416320, while the sum is 62.

The spelling of 1327745479481 in words is "one trillion, three hundred twenty-seven billion, seven hundred forty-five million, four hundred seventy-nine thousand, four hundred eighty-one".