12471327665 has 16 divisors (see below), whose sum is σ = 15427756800. Its totient is φ = 9673587072.

The previous prime is 12471327641. The next prime is 12471327679. The reversal of 12471327665 is 56672317421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12471327665 - 2⁶ = 12471327601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268025 + ... + 311094.

It is an arithmetic number, because the mean of its divisors is an integer number (964234800).

Almost surely, 2^12471327665 is an apocalyptic number.

It is an amenable number.

12471327665 is a deficient number, since it is larger than the sum of its proper divisors (2956429135).

12471327665 is an equidigital number, since it uses as much as digits as its factorization.

12471327665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579256.

The product of its digits is 423360, while the sum is 44.

The spelling of 12471327665 in words is "twelve billion, four hundred seventy-one million, three hundred twenty-seven thousand, six hundred sixty-five".