1218175336448 has 384 divisors, whose sum is σ = 3029635864800. Its totient is φ = 486930382848.

The previous prime is 1218175336397. The next prime is 1218175336457. The reversal of 1218175336448 is 8446335718121.

It is a self number, because there is not a number n which added to its sum of digits gives 1218175336448.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2227011311 + ... + 2227011857.

Almost surely, 2^{1218175336448} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1218175336448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1514817932400).

1218175336448 is an abundant number, since it is smaller than the sum of its proper divisors (1811460528352).

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

1218175336448 is an frugal number, since it uses more digits than its factorization.

1218175336448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683 (or 648 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 53.

The spelling of 1218175336448 in words is "one trillion, two hundred eighteen billion, one hundred seventy-five million, three hundred thirty-six thousand, four hundred forty-eight".