144421004381 has 2 divisors, whose sum is σ = 144421004382. Its totient is φ = 144421004380.

The previous prime is 144421004317. The next prime is 144421004407. The reversal of 144421004381 is 183400124441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75938824900 + 68482179481 = 275570^2 + 261691^2 .

It is a cyclic number.

It is not a de Polignac number, because 144421004381 - 2⁶ = 144421004317 is a prime.

It is a super-2 number, since 2×144421004381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144421204381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72210502190 + 72210502191.

It is an arithmetic number, because the mean of its divisors is an integer number (72210502191).

Almost surely, 2^144421004381 is an apocalyptic number.

It is an amenable number.

144421004381 is a deficient number, since it is larger than the sum of its proper divisors (1).

144421004381 is an equidigital number, since it uses as much as digits as its factorization.

144421004381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 144421004381 in words is "one hundred forty-four billion, four hundred twenty-one million, four thousand, three hundred eighty-one".