144431775399 has 8 divisors (see below), whose sum is σ = 198787820032. Its totient is φ = 93181790520.

The previous prime is 144431775373. The next prime is 144431775401. The reversal of 144431775399 is 993577134441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144431775399 - 2⁹ = 144431774887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144431775349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776514829 + ... + 776515014.

It is an arithmetic number, because the mean of its divisors is an integer number (24848477504).

Almost surely, 2^144431775399 is an apocalyptic number.

144431775399 is a deficient number, since it is larger than the sum of its proper divisors (54356044633).

144431775399 is a wasteful number, since it uses less digits than its factorization.

144431775399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553029877.

The product of its digits is 11430720, while the sum is 57.

The spelling of 144431775399 in words is "one hundred forty-four billion, four hundred thirty-one million, seven hundred seventy-five thousand, three hundred ninety-nine".