144434542981 has 2 divisors, whose sum is σ = 144434542982. Its totient is φ = 144434542980.

The previous prime is 144434542963. The next prime is 144434543027. The reversal of 144434542981 is 189245434441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143742589956 + 691953025 = 379134^2 + 26305^2 .

It is a cyclic number.

It is not a de Polignac number, because 144434542981 - 2¹⁹ = 144434018693 is a prime.

It is a super-2 number, since 2×144434542981² (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 (144434542921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72217271490 + 72217271491.

It is an arithmetic number, because the mean of its divisors is an integer number (72217271491).

Almost surely, 2^144434542981 is an apocalyptic number.

It is an amenable number.

144434542981 is a deficient number, since it is larger than the sum of its proper divisors (1).

144434542981 is an equidigital number, since it uses as much as digits as its factorization.

144434542981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2211840, while the sum is 49.

The spelling of 144434542981 in words is "one hundred forty-four billion, four hundred thirty-four million, five hundred forty-two thousand, nine hundred eighty-one".