12672217523 has 16 divisors (see below), whose sum is σ = 15248106240. Its totient is φ = 10287972000.

The previous prime is 12672217511. The next prime is 12672217559. The reversal of 12672217523 is 32571227621.

It is a cyclic number.

It is not a de Polignac number, because 12672217523 - 2⁴ = 12672217507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12672217223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894848 + ... + 908898.

It is an arithmetic number, because the mean of its divisors is an integer number (953006640).

Almost surely, 2^12672217523 is an apocalyptic number.

12672217523 is a deficient number, since it is larger than the sum of its proper divisors (2575888717).

12672217523 is a wasteful number, since it uses less digits than its factorization.

12672217523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20858.

The product of its digits is 70560, while the sum is 38.

The spelling of 12672217523 in words is "twelve billion, six hundred seventy-two million, two hundred seventeen thousand, five hundred twenty-three".