12641787173 has 8 divisors (see below), whose sum is σ = 12706621440. Its totient is φ = 12577052880.

The previous prime is 12641787157. The next prime is 12641787209. The reversal of 12641787173 is 37178714621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12641787173 - 2⁴ = 12641787157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641787133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235463 + ... + 284123.

It is an arithmetic number, because the mean of its divisors is an integer number (1588327680).

Almost surely, 2^12641787173 is an apocalyptic number.

It is an amenable number.

12641787173 is a deficient number, since it is larger than the sum of its proper divisors (64834267).

12641787173 is a wasteful number, since it uses less digits than its factorization.

12641787173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49987.

The product of its digits is 395136, while the sum is 47.

The spelling of 12641787173 in words is "twelve billion, six hundred forty-one million, seven hundred eighty-seven thousand, one hundred seventy-three".