143266646634421 has 2 divisors, whose sum is σ = 143266646634422. Its totient is φ = 143266646634420.

The previous prime is 143266646634401. The next prime is 143266646634431. The reversal of 143266646634421 is 124436646662341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142048592275396 + 1218054359025 = 11918414^2 + 1103655^2 .

It is a cyclic number.

It is not a de Polignac number, because 143266646634421 - 2⁹ = 143266646633909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143266646634401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71633323317210 + 71633323317211.

It is an arithmetic number, because the mean of its divisors is an integer number (71633323317211).

Almost surely, 2^{143266646634421} is an apocalyptic number.

It is an amenable number.

143266646634421 is a deficient number, since it is larger than the sum of its proper divisors (1).

143266646634421 is an equidigital number, since it uses as much as digits as its factorization.

143266646634421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71663616, while the sum is 58.

The spelling of 143266646634421 in words is "one hundred forty-three trillion, two hundred sixty-six billion, six hundred forty-six million, six hundred thirty-four thousand, four hundred twenty-one".