12690118173 has 4 divisors (see below), whose sum is σ = 16920157568. Its totient is φ = 8460078780.

The previous prime is 12690118159. The next prime is 12690118211. The reversal of 12690118173 is 37181109621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12690118173 - 2¹⁰ = 12690117149 is a prime.

It is a super-2 number, since 2×12690118173² (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 (12690111173) 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 in 3 ways as a sum of consecutive naturals, for example, 2115019693 + ... + 2115019698.

It is an arithmetic number, because the mean of its divisors is an integer number (4230039392).

Almost surely, 2^12690118173 is an apocalyptic number.

It is an amenable number.

12690118173 is a deficient number, since it is larger than the sum of its proper divisors (4230039395).

12690118173 is an equidigital number, since it uses as much as digits as its factorization.

12690118173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230039394.

The product of its (nonzero) digits is 18144, while the sum is 39.

The spelling of 12690118173 in words is "twelve billion, six hundred ninety million, one hundred eighteen thousand, one hundred seventy-three".