1440012405255 has 16 divisors (see below), whose sum is σ = 2304170325600. Its totient is φ = 767956457088.

The previous prime is 1440012405239. The next prime is 1440012405259. The reversal of 1440012405255 is 5525042100441.

It is a happy number.

It is not a de Polignac number, because 1440012405255 - 2⁴ = 1440012405239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440012405259) 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, 2897032 + ... + 3357501.

It is an arithmetic number, because the mean of its divisors is an integer number (144010645350).

Almost surely, 2^{1440012405255} is an apocalyptic number.

1440012405255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1440012405255 is a deficient number, since it is larger than the sum of its proper divisors (864157920345).

1440012405255 is a wasteful number, since it uses less digits than its factorization.

1440012405255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6269890.

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 1440012405255 its reverse (5525042100441), we get a palindrome (6965054505696).

The spelling of 1440012405255 in words is "one trillion, four hundred forty billion, twelve million, four hundred five thousand, two hundred fifty-five".