144433131421 has 16 divisors (see below), whose sum is σ = 152526144960. Its totient is φ = 136389951360.

The previous prime is 144433131361. The next prime is 144433131449. The reversal of 144433131421 is 124131334441.

144433131421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 144433131421 - 2⁹ = 144433130909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144433131481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7880350 + ... + 7898656.

It is an arithmetic number, because the mean of its divisors is an integer number (9532884060).

Almost surely, 2^144433131421 is an apocalyptic number.

It is an amenable number.

144433131421 is a deficient number, since it is larger than the sum of its proper divisors (8093013539).

144433131421 is a wasteful number, since it uses less digits than its factorization.

144433131421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19644.

The product of its digits is 13824, while the sum is 31.

Adding to 144433131421 its reverse (124131334441), we get a palindrome (268564465862).

The spelling of 144433131421 in words is "one hundred forty-four billion, four hundred thirty-three million, one hundred thirty-one thousand, four hundred twenty-one".