144324231440 has 40 divisors (see below), whose sum is σ = 335878864728. Its totient is φ = 57673774080.

The previous prime is 144324231437. The next prime is 144324231461. The reversal of 144324231440 is 44132423441.

It can be written as a sum of positive squares in 4 ways, for example, as 59190997264 + 85133234176 = 243292^2 + 291776^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 144324231397 and 144324231406.

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, 790571 + ... + 955850.

Almost surely, 2^144324231440 is an apocalyptic number.

144324231440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144324231440 is an abundant number, since it is smaller than the sum of its proper divisors (191554633288).

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

144324231440 is a wasteful number, since it uses less digits than its factorization.

144324231440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747467 (or 1747461 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 144324231440 its reverse (44132423441), we get a palindrome (188456654881).

The spelling of 144324231440 in words is "one hundred forty-four billion, three hundred twenty-four million, two hundred thirty-one thousand, four hundred forty".