12918378997127 has 16 divisors (see below), whose sum is σ = 13501908223488. Its totient is φ = 12336683657760.

The previous prime is 12918378997057. The next prime is 12918378997171. The reversal of 12918378997127 is 72179987381921.

It is a cyclic number.

It is not a de Polignac number, because 12918378997127 - 2¹⁸ = 12918378734983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918378997327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47127488 + ... + 47400810.

It is an arithmetic number, because the mean of its divisors is an integer number (843869263968).

Almost surely, 2^{12918378997127} is an apocalyptic number.

12918378997127 is a deficient number, since it is larger than the sum of its proper divisors (583529226361).

12918378997127 is a wasteful number, since it uses less digits than its factorization.

12918378997127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276670.

The product of its digits is 192036096, while the sum is 74.

The spelling of 12918378997127 in words is "twelve trillion, nine hundred eighteen billion, three hundred seventy-eight million, nine hundred ninety-seven thousand, one hundred twenty-seven".