12801608671 has 2 divisors, whose sum is σ = 12801608672. Its totient is φ = 12801608670.

The previous prime is 12801608669. The next prime is 12801608681. The reversal of 12801608671 is 17680610821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12801608671 - 2¹ = 12801608669 is a prime.

It is a super-4 number, since 4×12801608671⁴ (a number of 42 digits) contains 4444 as substring.

Together with 12801608669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12801608681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6400804335 + 6400804336.

It is an arithmetic number, because the mean of its divisors is an integer number (6400804336).

Almost surely, 2^12801608671 is an apocalyptic number.

12801608671 is a deficient number, since it is larger than the sum of its proper divisors (1).

12801608671 is an equidigital number, since it uses as much as digits as its factorization.

12801608671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 40.

The spelling of 12801608671 in words is "twelve billion, eight hundred one million, six hundred eight thousand, six hundred seventy-one".