1944040111200 has 540 divisors, whose sum is σ = 7792662214260. Its totient is φ = 471280550400.

The previous prime is 1944040111151. The next prime is 1944040111241. The reversal of 1944040111200 is 21110404491.

1944040111200 is a `hidden beast` number, since 1 + 9 + 4 + 40 + 401 + 11 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (540).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 7716831 + ... + 7964769.

Almost surely, 2^{1944040111200} is an apocalyptic number.

1944040111200 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 1944040111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3896331107130).

1944040111200 is an abundant number, since it is smaller than the sum of its proper divisors (5848622103060).

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

1944040111200 is a wasteful number, since it uses less digits than its factorization.

1944040111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247993 (or 247960 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 1944040111200 its reverse (21110404491), we get a palindrome (1965150515691).

The spelling of 1944040111200 in words is "one trillion, nine hundred forty-four billion, forty million, one hundred eleven thousand, two hundred".