143644604549 has 2 divisors, whose sum is σ = 143644604550. Its totient is φ = 143644604548.

The previous prime is 143644604449. The next prime is 143644604603. The reversal of 143644604549 is 945406446341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72538648900 + 71105955649 = 269330^2 + 266657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143644604549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143644604497 and 143644604506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143644604449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71822302274 + 71822302275.

It is an arithmetic number, because the mean of its divisors is an integer number (71822302275).

Almost surely, 2^143644604549 is an apocalyptic number.

It is an amenable number.

143644604549 is a deficient number, since it is larger than the sum of its proper divisors (1).

143644604549 is an equidigital number, since it uses as much as digits as its factorization.

143644604549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 143644604549 in words is "one hundred forty-three billion, six hundred forty-four million, six hundred four thousand, five hundred forty-nine".