143663322550621 has 2 divisors, whose sum is σ = 143663322550622. Its totient is φ = 143663322550620.

The previous prime is 143663322550537. The next prime is 143663322550717. The reversal of 143663322550621 is 126055223366341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132618002648121 + 11045319902500 = 11515989^2 + 3323450^2 .

It is a cyclic number.

It is not a de Polignac number, because 143663322550621 - 2¹⁵ = 143663322517853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143663322554621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71831661275310 + 71831661275311.

It is an arithmetic number, because the mean of its divisors is an integer number (71831661275311).

Almost surely, 2^{143663322550621} is an apocalyptic number.

It is an amenable number.

143663322550621 is a deficient number, since it is larger than the sum of its proper divisors (1).

143663322550621 is an equidigital number, since it uses as much as digits as its factorization.

143663322550621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 143663322550621 in words is "one hundred forty-three trillion, six hundred sixty-three billion, three hundred twenty-two million, five hundred fifty thousand, six hundred twenty-one".