13008732173 has 4 divisors (see below), whose sum is σ = 13574329248. Its totient is φ = 12443135100.

The previous prime is 13008732167. The next prime is 13008732193. The reversal of 13008732173 is 37123780031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37123780031 = 13 ⋅2855675387.

It is a cyclic number.

It is not a de Polignac number, because 13008732173 - 2⁴ = 13008732157 is a prime.

It is a super-2 number, since 2×13008732173² (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 (13008732103) 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, 282798503 + ... + 282798548.

It is an arithmetic number, because the mean of its divisors is an integer number (3393582312).

Almost surely, 2^13008732173 is an apocalyptic number.

It is an amenable number.

13008732173 is a deficient number, since it is larger than the sum of its proper divisors (565597075).

13008732173 is an equidigital number, since it uses as much as digits as its factorization.

13008732173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565597074.

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 13008732173 in words is "thirteen billion, eight million, seven hundred thirty-two thousand, one hundred seventy-three".