144428642919 has 16 divisors (see below), whose sum is σ = 233420029440. Its totient is φ = 87532510680.

The previous prime is 144428642893. The next prime is 144428642947. The reversal of 144428642919 is 919246824441.

144428642919 is a `hidden beast` number, since 144 + 428 + 64 + 2 + 9 + 19 = 666.

It is not a de Polignac number, because 144428642919 - 2¹⁶ = 144428577383 is a prime.

It is a super-2 number, since 2×144428642919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144428642419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243145567 + ... + 243146160.

It is an arithmetic number, because the mean of its divisors is an integer number (14588751840).

Almost surely, 2^144428642919 is an apocalyptic number.

144428642919 is a deficient number, since it is larger than the sum of its proper divisors (88991386521).

144428642919 is a wasteful number, since it uses less digits than its factorization.

144428642919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486291747 (or 486291741 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 144428642919 in words is "one hundred forty-four billion, four hundred twenty-eight million, six hundred forty-two thousand, nine hundred nineteen".