1218567387152 has 80 divisors (see below), whose sum is σ = 2479593676800. Its totient is φ = 579366380160.

The previous prime is 1218567387143. The next prime is 1218567387173. The reversal of 1218567387152 is 2517837658121.

It is a super-2 number, since 2×1218567387152² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72185849 + ... + 72202727.

It is an arithmetic number, because the mean of its divisors is an integer number (30994920960).

Almost surely, 2^{1218567387152} 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 1218567387152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239796838400).

1218567387152 is an abundant number, since it is smaller than the sum of its proper divisors (1261026289648).

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

1218567387152 is a wasteful number, since it uses less digits than its factorization.

1218567387152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19444 (or 19438 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 56.

The spelling of 1218567387152 in words is "one trillion, two hundred eighteen billion, five hundred sixty-seven million, three hundred eighty-seven thousand, one hundred fifty-two".