144431144020 has 12 divisors (see below), whose sum is σ = 303305402484. Its totient is φ = 57772457600.

The previous prime is 144431144009. The next prime is 144431144029. The reversal of 144431144020 is 20441134441.

It can be written as a sum of positive squares in 2 ways, for example, as 29886802884 + 114544341136 = 172878^2 + 338444^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 144431144020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144431144029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3610778581 + ... + 3610778620.

It is an arithmetic number, because the mean of its divisors is an integer number (25275450207).

Almost surely, 2^144431144020 is an apocalyptic number.

144431144020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144431144020 is an abundant number, since it is smaller than the sum of its proper divisors (158874258464).

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

144431144020 is a wasteful number, since it uses less digits than its factorization.

144431144020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221557210 (or 7221557208 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 144431144020 its reverse (20441134441), we get a palindrome (164872278461).

The spelling of 144431144020 in words is "one hundred forty-four billion, four hundred thirty-one million, one hundred forty-four thousand, twenty".