144534051661 has 2 divisors, whose sum is σ = 144534051662. Its totient is φ = 144534051660.

The previous prime is 144534051643. The next prime is 144534051679. The reversal of 144534051661 is 166150435441.

It is a balanced prime because it is at equal distance from previous prime (144534051643) and next prime (144534051679).

It can be written as a sum of positive squares in only one way, i.e., 137868145636 + 6665906025 = 371306^2 + 81645^2 .

It is a cyclic number.

It is not a de Polignac number, because 144534051661 - 2¹¹ = 144534049613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144534051691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72267025830 + 72267025831.

It is an arithmetic number, because the mean of its divisors is an integer number (72267025831).

Almost surely, 2^144534051661 is an apocalyptic number.

It is an amenable number.

144534051661 is a deficient number, since it is larger than the sum of its proper divisors (1).

144534051661 is an equidigital number, since it uses as much as digits as its factorization.

144534051661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 144534051661 in words is "one hundred forty-four billion, five hundred thirty-four million, fifty-one thousand, six hundred sixty-one".