12042645306815 has 16 divisors (see below), whose sum is σ = 14484002333760. Its totient is φ = 9612242538240.

The previous prime is 12042645306799. The next prime is 12042645306823. The reversal of 12042645306815 is 51860354624021.

It is not a de Polignac number, because 12042645306815 - 2⁴ = 12042645306799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12042645306815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7601387 + ... + 9048003.

It is an arithmetic number, because the mean of its divisors is an integer number (905250145860).

Almost surely, 2^{12042645306815} is an apocalyptic number.

12042645306815 is a deficient number, since it is larger than the sum of its proper divisors (2441357026945).

12042645306815 is a wasteful number, since it uses less digits than its factorization.

12042645306815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450402.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 12042645306815 in words is "twelve trillion, forty-two billion, six hundred forty-five million, three hundred six thousand, eight hundred fifteen".