12042543847515 has 32 divisors (see below), whose sum is σ = 19347786792000. Its totient is φ = 6396171479040.

The previous prime is 12042543847493. The next prime is 12042543847549. The reversal of 12042543847515 is 51574834524021.

It is not a de Polignac number, because 12042543847515 - 2¹¹ = 12042543845467 is a prime.

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, 1917511 + ... + 5268959.

It is an arithmetic number, because the mean of its divisors is an integer number (604618337250).

Almost surely, 2^{12042543847515} is an apocalyptic number.

12042543847515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12042543847515 is a deficient number, since it is larger than the sum of its proper divisors (7305242944485).

12042543847515 is a wasteful number, since it uses less digits than its factorization.

12042543847515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352447.

The product of its (nonzero) digits is 5376000, while the sum is 51.

The spelling of 12042543847515 in words is "twelve trillion, forty-two billion, five hundred forty-three million, eight hundred forty-seven thousand, five hundred fifteen".