12405517272007 has 4 divisors (see below), whose sum is σ = 12405555635200. Its totient is φ = 12405478908816.

The previous prime is 12405517271993. The next prime is 12405517272011. The reversal of 12405517272007 is 70027271550421.

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

It is a cyclic number.

It is not a de Polignac number, because 12405517272007 - 2¹⁹ = 12405516747719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405517272097) 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, 18692382 + ... + 19344667.

It is an arithmetic number, because the mean of its divisors is an integer number (3101388908800).

Almost surely, 2^{12405517272007} is an apocalyptic number.

12405517272007 is a deficient number, since it is larger than the sum of its proper divisors (38363193).

12405517272007 is an equidigital number, since it uses as much as digits as its factorization.

12405517272007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38363192.

The product of its (nonzero) digits is 274400, while the sum is 43.

The spelling of 12405517272007 in words is "twelve trillion, four hundred five billion, five hundred seventeen million, two hundred seventy-two thousand, seven".