1316818944000 has 1728 divisors, whose sum is σ = 5734716982020. Its totient is φ = 300987187200.

The previous prime is 1316818943969. The next prime is 1316818944071. The reversal of 1316818944000 is 4498186131.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a Jordan-Polya number, since it can be written as 10! ⋅ 9!.

1316818944000 is a `hidden beast` number, since 1 + 3 + 1 + 68 + 189 + 4 + 400 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 890169606144 + 426649337856 = 943488^2 + 653184^2 .

It is a tau number, because it is divible by the number of its divisors (1728).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 188116991997 + ... + 188116992003.

Almost surely, 2^{1316818944000} is an apocalyptic number.

1316818944000 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 1316818944000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2867358491010).

1316818944000 is an abundant number, since it is smaller than the sum of its proper divisors (4417898038020).

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

1316818944000 is an frugal number, since it uses more digits than its factorization.

1316818944000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 1316818944000 in words is "one trillion, three hundred sixteen billion, eight hundred eighteen million, nine hundred forty-four thousand".