1444221242240 has 128 divisors (see below), whose sum is σ = 4177925956800. Its totient is φ = 466034393088.

The previous prime is 1444221242129. The next prime is 1444221242287. The reversal of 1444221242240 is 422421224441.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1444221242197 and 1444221242206.

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, 9405335 + ... + 9557654.

Almost surely, 2^{1444221242240} is an apocalyptic number.

1444221242240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444221242240 is an abundant number, since it is smaller than the sum of its proper divisors (2733704714560).

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

1444221242240 is a wasteful number, since it uses less digits than its factorization.

1444221242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18963032 (or 18963020 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 1444221242240 its reverse (422421224441), we get a palindrome (1866642466681).

The spelling of 1444221242240 in words is "one trillion, four hundred forty-four billion, two hundred twenty-one million, two hundred forty-two thousand, two hundred forty".