144688645922 has 6 divisors (see below), whose sum is σ = 217033775793. Its totient is φ = 72344053992.

The previous prime is 144688645921. The next prime is 144688646023. The reversal of 144688645922 is 229546886441.

It can be written as a sum of positive squares in 2 ways, for example, as 108952146241 + 35736499681 = 330079^2 + 189041^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=268969.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144688645921) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 403454 + ... + 672422.

Almost surely, 2^144688645922 is an apocalyptic number.

144688645922 is a deficient number, since it is larger than the sum of its proper divisors (72345129871).

144688645922 is an frugal number, since it uses more digits than its factorization.

144688645922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537940 (or 268971 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 59.

The spelling of 144688645922 in words is "one hundred forty-four billion, six hundred eighty-eight million, six hundred forty-five thousand, nine hundred twenty-two".