144220646000 has 40 divisors (see below), whose sum is σ = 348725526864. Its totient is φ = 57688257600.

The previous prime is 144220645999. The next prime is 144220646071. The reversal of 144220646000 is 646022441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36053162 + ... + 36057161.

Almost surely, 2^144220646000 is an apocalyptic number.

144220646000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144220646000 is an abundant number, since it is smaller than the sum of its proper divisors (204504880864).

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

144220646000 is an equidigital number, since it uses as much as digits as its factorization.

144220646000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72110346 (or 72110330 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 144220646000 its reverse (646022441), we get a palindrome (144866668441).

The spelling of 144220646000 in words is "one hundred forty-four billion, two hundred twenty million, six hundred forty-six thousand".