12042971878 has 16 divisors (see below), whose sum is σ = 20906426880. Its totient is φ = 5095940616.

The previous prime is 12042971813. The next prime is 12042971903. The reversal of 12042971878 is 87817924021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5443276 + ... + 5445487.

It is an arithmetic number, because the mean of its divisors is an integer number (1306651680).

Almost surely, 2^12042971878 is an apocalyptic number.

12042971878 is a deficient number, since it is larger than the sum of its proper divisors (8863455002).

12042971878 is a wasteful number, since it uses less digits than its factorization.

12042971878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888851.

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 12042971878 in words is "twelve billion, forty-two million, nine hundred seventy-one thousand, eight hundred seventy-eight".