13125724171 has 4 divisors (see below), whose sum is σ = 15000827632. Its totient is φ = 11250620712.

The previous prime is 13125724151. The next prime is 13125724181. The reversal of 13125724171 is 17142752131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17142752131 = 19697 ⋅870323.

It is a cyclic number.

It is not a de Polignac number, because 13125724171 - 2²³ = 13117335563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13125724141) 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, 937551720 + ... + 937551733.

It is an arithmetic number, because the mean of its divisors is an integer number (3750206908).

Almost surely, 2^13125724171 is an apocalyptic number.

13125724171 is a deficient number, since it is larger than the sum of its proper divisors (1875103461).

13125724171 is an equidigital number, since it uses as much as digits as its factorization.

13125724171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875103460.

The product of its digits is 11760, while the sum is 34.

The spelling of 13125724171 in words is "thirteen billion, one hundred twenty-five million, seven hundred twenty-four thousand, one hundred seventy-one".