12507858173 has 2 divisors, whose sum is σ = 12507858174. Its totient is φ = 12507858172.

The previous prime is 12507858157. The next prime is 12507858203. The reversal of 12507858173 is 37185870521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9749192644 + 2758665529 = 98738^2 + 52523^2 .

It is an emirp because it is prime and its reverse (37185870521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12507858173 - 2⁴ = 12507858157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12507858133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253929086 + 6253929087.

It is an arithmetic number, because the mean of its divisors is an integer number (6253929087).

Almost surely, 2^12507858173 is an apocalyptic number.

It is an amenable number.

12507858173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12507858173 is an equidigital number, since it uses as much as digits as its factorization.

12507858173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 470400, while the sum is 47.

The spelling of 12507858173 in words is "twelve billion, five hundred seven million, eight hundred fifty-eight thousand, one hundred seventy-three".