12510075173 has 4 divisors (see below), whose sum is σ = 12510328428. Its totient is φ = 12509821920.

The previous prime is 12510075163. The next prime is 12510075181. The reversal of 12510075173 is 37157001521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37157001521 = 19 ⋅1955631659.

It can be written as a sum of positive squares in 2 ways, for example, as 10679775649 + 1830299524 = 103343^2 + 42782^2 .

It is a cyclic number.

It is not a de Polignac number, because 12510075173 - 2⁴ = 12510075157 is a prime.

It is a super-2 number, since 2×12510075173² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12510075163) 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, 25736 + ... + 160257.

It is an arithmetic number, because the mean of its divisors is an integer number (3127582107).

Almost surely, 2^12510075173 is an apocalyptic number.

It is an amenable number.

12510075173 is a deficient number, since it is larger than the sum of its proper divisors (253255).

12510075173 is an equidigital number, since it uses as much as digits as its factorization.

12510075173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253254.

The product of its (nonzero) digits is 7350, while the sum is 32.

Adding to 12510075173 its reverse (37157001521), we get a palindrome (49667076694).

The spelling of 12510075173 in words is "twelve billion, five hundred ten million, seventy-five thousand, one hundred seventy-three".