12546178855042 has 16 divisors (see below), whose sum is σ = 21872273065920. Its totient is φ = 5285799323568.

The previous prime is 12546178855019. The next prime is 12546178855051. The reversal of 12546178855042 is 24055887164521.

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, 7594538433 + ... + 7594540084.

It is an arithmetic number, because the mean of its divisors is an integer number (1367017066620).

Almost surely, 2^{12546178855042} is an apocalyptic number.

12546178855042 is a deficient number, since it is larger than the sum of its proper divisors (9326094210878).

12546178855042 is a wasteful number, since it uses less digits than its factorization.

12546178855042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15189078585.

The product of its (nonzero) digits is 21504000, while the sum is 58.

The spelling of 12546178855042 in words is "twelve trillion, five hundred forty-six billion, one hundred seventy-eight million, eight hundred fifty-five thousand, forty-two".