1440021544330 has 32 divisors (see below), whose sum is σ = 2603651802048. Its totient is φ = 573429523200.

The previous prime is 1440021544319. The next prime is 1440021544337. The reversal of 1440021544330 is 334451200441.

It is a junction number, because it is equal to n+sod(n) for n = 1440021544292 and 1440021544301.

It is not an unprimeable number, because it can be changed into a prime (1440021544337) 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, 7333125 + ... + 7526935.

It is an arithmetic number, because the mean of its divisors is an integer number (81364118814).

Almost surely, 2^{1440021544330} is an apocalyptic number.

1440021544330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1440021544330 is a deficient number, since it is larger than the sum of its proper divisors (1163630257718).

1440021544330 is a wasteful number, since it uses less digits than its factorization.

1440021544330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197142.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 1440021544330 its reverse (334451200441), we get a palindrome (1774472744771).

The spelling of 1440021544330 in words is "one trillion, four hundred forty billion, twenty-one million, five hundred forty-four thousand, three hundred thirty".