12653271073 has 4 divisors (see below), whose sum is σ = 12653614980. Its totient is φ = 12652927168.

The previous prime is 12653271041. The next prime is 12653271079. The reversal of 12653271073 is 37017235621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3068273664 + 9584997409 = 55392^2 + 97903^2 .

It is a cyclic number.

It is not a de Polignac number, because 12653271073 - 2⁵ = 12653271041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12653271079) 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, 109108 + ... + 192901.

It is an arithmetic number, because the mean of its divisors is an integer number (3163403745).

Almost surely, 2^12653271073 is an apocalyptic number.

It is an amenable number.

12653271073 is a deficient number, since it is larger than the sum of its proper divisors (343907).

12653271073 is an equidigital number, since it uses as much as digits as its factorization.

12653271073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343906.

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 12653271073 in words is "twelve billion, six hundred fifty-three million, two hundred seventy-one thousand, seventy-three".