144703691338 has 4 divisors (see below), whose sum is σ = 217055537010. Its totient is φ = 72351845668.

The previous prime is 144703691323. The next prime is 144703691339. The reversal of 144703691338 is 833196307441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 833196307441 = 397 ⋅2098731253.

It can be written as a sum of positive squares in only one way, i.e., 141762039169 + 2941652169 = 376513^2 + 54237^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144703691291 and 144703691300.

It is not an unprimeable number, because it can be changed into a prime (144703691339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36175922833 + ... + 36175922836.

Almost surely, 2^144703691338 is an apocalyptic number.

144703691338 is a deficient number, since it is larger than the sum of its proper divisors (72351845672).

144703691338 is an equidigital number, since it uses as much as digits as its factorization.

144703691338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72351845671.

The product of its (nonzero) digits is 1306368, while the sum is 49.

Adding to 144703691338 its reverse (833196307441), we get a palindrome (977899998779).

The spelling of 144703691338 in words is "one hundred forty-four billion, seven hundred three million, six hundred ninety-one thousand, three hundred thirty-eight".