144544136260397 has 4 divisors (see below), whose sum is σ = 146994036875040. Its totient is φ = 142094235645756.

The previous prime is 144544136260367. The next prime is 144544136260439. The reversal of 144544136260397 is 793062631445441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144544136260397 - 2⁶ = 144544136260333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 2449900614583 = 144544136260397 / (1 + 4 + 4 + 5 + 4 + 4 + 1 + 3 + 6 + 2 + 6 + 0 + 3 + 9 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144544136260367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1224950307233 + ... + 1224950307350.

It is an arithmetic number, because the mean of its divisors is an integer number (36748509218760).

Almost surely, 2^{144544136260397} is an apocalyptic number.

It is an amenable number.

144544136260397 is a deficient number, since it is larger than the sum of its proper divisors (2449900614643).

144544136260397 is an equidigital number, since it uses as much as digits as its factorization.

144544136260397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449900614642.

The product of its (nonzero) digits is 52254720, while the sum is 59.

The spelling of 144544136260397 in words is "one hundred forty-four trillion, five hundred forty-four billion, one hundred thirty-six million, two hundred sixty thousand, three hundred ninety-seven".