144040020403220 has 96 divisors (see below), whose sum is σ = 323155573991712. Its totient is φ = 53741633404928.

The previous prime is 144040020403187. The next prime is 144040020403231. The reversal of 144040020403220 is 22304020040441.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 4806109136656 + 139233911266564 = 2192284^2 + 11799742^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 144040020403220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13030022 + ... + 21397698.

It is an arithmetic number, because the mean of its divisors is an integer number (3366203895747).

Almost surely, 2^{144040020403220} is an apocalyptic number.

144040020403220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144040020403220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161577786995856).

144040020403220 is an abundant number, since it is smaller than the sum of its proper divisors (179115553588492).

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

144040020403220 is a wasteful number, since it uses less digits than its factorization.

144040020403220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8368157 (or 8368155 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 144040020403220 its reverse (22304020040441), we get a palindrome (166344040443661).

The spelling of 144040020403220 in words is "one hundred forty-four trillion, forty billion, twenty million, four hundred three thousand, two hundred twenty".