144616616381 has 2 divisors, whose sum is σ = 144616616382. Its totient is φ = 144616616380.

The previous prime is 144616616281. The next prime is 144616616401. The reversal of 144616616381 is 183616616441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75166447225 + 69450169156 = 274165^2 + 263534^2 .

It is a cyclic number.

It is not a de Polignac number, because 144616616381 - 2¹⁴ = 144616599997 is a prime.

It is a super-2 number, since 2×144616616381² (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 (144616616281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72308308190 + 72308308191.

It is an arithmetic number, because the mean of its divisors is an integer number (72308308191).

Almost surely, 2^144616616381 is an apocalyptic number.

It is an amenable number.

144616616381 is a deficient number, since it is larger than the sum of its proper divisors (1).

144616616381 is an equidigital number, since it uses as much as digits as its factorization.

144616616381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 47.

The spelling of 144616616381 in words is "one hundred forty-four billion, six hundred sixteen million, six hundred sixteen thousand, three hundred eighty-one".