1444721711240 has 32 divisors (see below), whose sum is σ = 3253130230680. Its totient is φ = 577443105792.

The previous prime is 1444721711197. The next prime is 1444721711261. The reversal of 1444721711240 is 421171274441.

It can be written as a sum of positive squares in 4 ways, for example, as 1443174547684 + 1547163556 = 1201322^2 + 39334^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1444721711194 and 1444721711203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13871807 + ... + 13975566.

Almost surely, 2^{1444721711240} is an apocalyptic number.

1444721711240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444721711240 is an abundant number, since it is smaller than the sum of its proper divisors (1808408519440).

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

1444721711240 is a wasteful number, since it uses less digits than its factorization.

1444721711240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27848681 (or 27848677 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

Adding to 1444721711240 its reverse (421171274441), we get a palindrome (1865892985681).

The spelling of 1444721711240 in words is "one trillion, four hundred forty-four billion, seven hundred twenty-one million, seven hundred eleven thousand, two hundred forty".