1440508448181 has 16 divisors (see below), whose sum is σ = 2096288124480. Its totient is φ = 872617461120.

The previous prime is 1440508448177. The next prime is 1440508448189. The reversal of 1440508448181 is 1818448050441.

It is not a de Polignac number, because 1440508448181 - 2² = 1440508448177 is a prime.

It is a super-2 number, since 2×1440508448181² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1440508448181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440508448189) 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, 10379070 + ... + 10516943.

It is an arithmetic number, because the mean of its divisors is an integer number (131018007780).

Almost surely, 2^{1440508448181} is an apocalyptic number.

1440508448181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1440508448181 is a deficient number, since it is larger than the sum of its proper divisors (655779676299).

1440508448181 is a wasteful number, since it uses less digits than its factorization.

1440508448181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20898116.

The product of its (nonzero) digits is 655360, while the sum is 48.

The spelling of 1440508448181 in words is "one trillion, four hundred forty billion, five hundred eight million, four hundred forty-eight thousand, one hundred eighty-one".