1440132315440 has 80 divisors (see below), whose sum is σ = 4120994031168. Its totient is φ = 455778137088.

The previous prime is 1440132315439. The next prime is 1440132315449. The reversal of 1440132315440 is 445132310441.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1440132315397 and 1440132315406.

It is not an unprimeable number, because it can be changed into a prime (1440132315449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98902907 + ... + 98917466.

Almost surely, 2^{1440132315440} is an apocalyptic number.

1440132315440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440132315440 is an abundant number, since it is smaller than the sum of its proper divisors (2680861715728).

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

1440132315440 is a wasteful number, since it uses less digits than its factorization.

1440132315440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197820406 (or 197820400 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 1440132315440 its reverse (445132310441), we get a palindrome (1885264625881).

The spelling of 1440132315440 in words is "one trillion, four hundred forty billion, one hundred thirty-two million, three hundred fifteen thousand, four hundred forty".