143666311433497 has 2 divisors, whose sum is σ = 143666311433498. Its totient is φ = 143666311433496.

The previous prime is 143666311433443. The next prime is 143666311433609. The reversal of 143666311433497 is 794334113666341.

143666311433497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71894729813776 + 71771581619721 = 8479076^2 + 8471811^2 .

It is a cyclic number.

It is not a de Polignac number, because 143666311433497 - 2⁷ = 143666311433369 is a prime.

It is not a weakly prime, because it can be changed into another prime (143666311833497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71833155716748 + 71833155716749.

It is an arithmetic number, because the mean of its divisors is an integer number (71833155716749).

Almost surely, 2^{143666311433497} is an apocalyptic number.

It is an amenable number.

143666311433497 is a deficient number, since it is larger than the sum of its proper divisors (1).

143666311433497 is an equidigital number, since it uses as much as digits as its factorization.

143666311433497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70543872, while the sum is 61.

The spelling of 143666311433497 in words is "one hundred forty-three trillion, six hundred sixty-six billion, three hundred eleven million, four hundred thirty-three thousand, four hundred ninety-seven".