1218432450560 has 240 divisors, whose sum is σ = 3208648445856. Its totient is φ = 441373949952.

The previous prime is 1218432450559. The next prime is 1218432450577. The reversal of 1218432450560 is 650542348121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56432087 + ... + 56453673.

Almost surely, 2^{1218432450560} is an apocalyptic number.

1218432450560 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 1218432450560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604324222928).

1218432450560 is an abundant number, since it is smaller than the sum of its proper divisors (1990215995296).

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

1218432450560 is an equidigital number, since it uses as much as digits as its factorization.

1218432450560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21686 (or 21660 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

Adding to 1218432450560 its reverse (650542348121), we get a palindrome (1868974798681).

The spelling of 1218432450560 in words is "one trillion, two hundred eighteen billion, four hundred thirty-two million, four hundred fifty thousand, five hundred sixty".