1218317516814 has 16 divisors (see below), whose sum is σ = 2542575687552. Its totient is φ = 388449063288.

The previous prime is 1218317516797. The next prime is 1218317516821. The reversal of 1218317516814 is 4186157138121.

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, 4414193764 + ... + 4414194039.

It is an arithmetic number, because the mean of its divisors is an integer number (158910980472).

Almost surely, 2^{1218317516814} is an apocalyptic number.

1218317516814 is an abundant number, since it is smaller than the sum of its proper divisors (1324258170738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1218317516814 is a wasteful number, since it uses less digits than its factorization.

1218317516814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828387831.

The product of its digits is 322560, while the sum is 48.

The spelling of 1218317516814 in words is "one trillion, two hundred eighteen billion, three hundred seventeen million, five hundred sixteen thousand, eight hundred fourteen".