12173547313 has 2 divisors, whose sum is σ = 12173547314. Its totient is φ = 12173547312.

The previous prime is 12173547311. The next prime is 12173547367. The reversal of 12173547313 is 31374537121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11250420624 + 923126689 = 106068^2 + 30383^2 .

It is a cyclic number.

It is not a de Polignac number, because 12173547313 - 2¹ = 12173547311 is a prime.

Together with 12173547311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12173547311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6086773656 + 6086773657.

It is an arithmetic number, because the mean of its divisors is an integer number (6086773657).

Almost surely, 2^12173547313 is an apocalyptic number.

It is an amenable number.

12173547313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12173547313 is an equidigital number, since it uses as much as digits as its factorization.

12173547313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The spelling of 12173547313 in words is "twelve billion, one hundred seventy-three million, five hundred forty-seven thousand, three hundred thirteen".