1218019285816 has 8 divisors (see below), whose sum is σ = 2283786160920. Its totient is φ = 609009642904.

The previous prime is 1218019285799. The next prime is 1218019285859. The reversal of 1218019285816 is 6185829108121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76126205356 + ... + 76126205371.

It is an arithmetic number, because the mean of its divisors is an integer number (285473270115).

Almost surely, 2^{1218019285816} is an apocalyptic number.

It is an amenable number.

1218019285816 is a deficient number, since it is larger than the sum of its proper divisors (1065766875104).

1218019285816 is a wasteful number, since it uses less digits than its factorization.

1218019285816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152252410733 (or 152252410729 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 52.

The spelling of 1218019285816 in words is "one trillion, two hundred eighteen billion, nineteen million, two hundred eighty-five thousand, eight hundred sixteen".