143126365651561 has 2 divisors, whose sum is σ = 143126365651562. Its totient is φ = 143126365651560.

The previous prime is 143126365651463. The next prime is 143126365651567. The reversal of 143126365651561 is 165156563621341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140512100288400 + 2614265363161 = 11853780^2 + 1616869^2 .

It is a cyclic number.

It is not a de Polignac number, because 143126365651561 - 2¹¹ = 143126365649513 is a prime.

It is not a weakly prime, because it can be changed into another prime (143126365651567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71563182825780 + 71563182825781.

It is an arithmetic number, because the mean of its divisors is an integer number (71563182825781).

Almost surely, 2^{143126365651561} is an apocalyptic number.

It is an amenable number.

143126365651561 is a deficient number, since it is larger than the sum of its proper divisors (1).

143126365651561 is an equidigital number, since it uses as much as digits as its factorization.

143126365651561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664000, while the sum is 55.

The spelling of 143126365651561 in words is "one hundred forty-three trillion, one hundred twenty-six billion, three hundred sixty-five million, six hundred fifty-one thousand, five hundred sixty-one".