1218980797200 has 360 divisors, whose sum is σ = 4384157895936. Its totient is φ = 313315200000.

The previous prime is 1218980797183. The next prime is 1218980797213. The reversal of 1218980797200 is 27970898121.

It is a tau number, because it is divible by the number of its divisors (360).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 27989842 + ... + 28033358.

Almost surely, 2^{1218980797200} is an apocalyptic number.

1218980797200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1218980797200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2192078947968).

1218980797200 is an abundant number, since it is smaller than the sum of its proper divisors (3165177098736).

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

1218980797200 is a wasteful number, since it uses less digits than its factorization.

1218980797200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43823 (or 43809 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The spelling of 1218980797200 in words is "one trillion, two hundred eighteen billion, nine hundred eighty million, seven hundred ninety-seven thousand, two hundred".