154144425242321 has 2 divisors, whose sum is σ = 154144425242322. Its totient is φ = 154144425242320.

The previous prime is 154144425242299. The next prime is 154144425242323. The reversal of 154144425242321 is 123242524441451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108161976009025 + 45982449233296 = 10400095^2 + 6781036^2 .

It is a cyclic number.

It is not a de Polignac number, because 154144425242321 - 2¹⁴ = 154144425225937 is a prime.

It is a super-3 number, since 3×154144425242321³ (a number of 44 digits) contains 333 as substring.

Together with 154144425242323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154144425242323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77072212621160 + 77072212621161.

It is an arithmetic number, because the mean of its divisors is an integer number (77072212621161).

Almost surely, 2^{154144425242321} is an apocalyptic number.

It is an amenable number.

154144425242321 is a deficient number, since it is larger than the sum of its proper divisors (1).

154144425242321 is an equidigital number, since it uses as much as digits as its factorization.

154144425242321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1228800, while the sum is 44.

Adding to 154144425242321 its reverse (123242524441451), we get a palindrome (277386949683772).

The spelling of 154144425242321 in words is "one hundred fifty-four trillion, one hundred forty-four billion, four hundred twenty-five million, two hundred forty-two thousand, three hundred twenty-one".