144404440020 has 72 divisors (see below), whose sum is σ = 439247128320. Its totient is φ = 38400569280.

The previous prime is 144404440007. The next prime is 144404440027. The reversal of 144404440020 is 20044404441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144404440027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1052716 + ... + 1181955.

It is an arithmetic number, because the mean of its divisors is an integer number (6100654560).

Almost surely, 2^144404440020 is an apocalyptic number.

144404440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144404440020 is an abundant number, since it is smaller than the sum of its proper divisors (294842688300).

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

144404440020 is a wasteful number, since it uses less digits than its factorization.

144404440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235045 (or 2235040 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 144404440020 its reverse (20044404441), we get a palindrome (164448844461).

The spelling of 144404440020 in words is "one hundred forty-four billion, four hundred four million, four hundred forty thousand, twenty".