1218577867768 has 32 divisors (see below), whose sum is σ = 2322649319760. Its totient is φ = 599287037440.

The previous prime is 1218577867751. The next prime is 1218577867817. The reversal of 1218577867768 is 8677687758121.

It is a self number, because there is not a number n which added to its sum of digits gives 1218577867768.

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 in 7 ways as a sum of consecutive naturals, for example, 5026555 + ... + 5263402.

Almost surely, 2^{1218577867768} is an apocalyptic number.

It is an amenable number.

1218577867768 is a deficient number, since it is larger than the sum of its proper divisors (1104071451992).

1218577867768 is a wasteful number, since it uses less digits than its factorization.

1218577867768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10290207 (or 10290203 counting only the distinct ones).

The product of its digits is 442552320, while the sum is 73.

The spelling of 1218577867768 in words is "one trillion, two hundred eighteen billion, five hundred seventy-seven million, eight hundred sixty-seven thousand, seven hundred sixty-eight".