12642671041015 has 32 divisors (see below), whose sum is σ = 15566507161920. Its totient is φ = 9851900534784.

The previous prime is 12642671041009. The next prime is 12642671041027. The reversal of 12642671041015 is 51014017624621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12642671041015 - 2⁷ = 12642671040887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 475328697 + ... + 475355293.

It is an arithmetic number, because the mean of its divisors is an integer number (486453348810).

Almost surely, 2^{12642671041015} is an apocalyptic number.

12642671041015 is a deficient number, since it is larger than the sum of its proper divisors (2923836120905).

12642671041015 is a wasteful number, since it uses less digits than its factorization.

12642671041015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32611.

The product of its (nonzero) digits is 80640, while the sum is 40.

Adding to 12642671041015 its reverse (51014017624621), we get a palindrome (63656688665636).

The spelling of 12642671041015 in words is "twelve trillion, six hundred forty-two billion, six hundred seventy-one million, forty-one thousand, fifteen".