142561365673 has 2 divisors, whose sum is σ = 142561365674. Its totient is φ = 142561365672.

The previous prime is 142561365641. The next prime is 142561365677. The reversal of 142561365673 is 376563165241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79373483289 + 63187882384 = 281733^2 + 251372^2 .

It is an emirp because it is prime and its reverse (376563165241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142561365673 - 2⁵ = 142561365641 is a prime.

It is not a weakly prime, because it can be changed into another prime (142561365677) 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, 71280682836 + 71280682837.

It is an arithmetic number, because the mean of its divisors is an integer number (71280682837).

Almost surely, 2^142561365673 is an apocalyptic number.

It is an amenable number.

142561365673 is a deficient number, since it is larger than the sum of its proper divisors (1).

142561365673 is an equidigital number, since it uses as much as digits as its factorization.

142561365673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 49.

The spelling of 142561365673 in words is "one hundred forty-two billion, five hundred sixty-one million, three hundred sixty-five thousand, six hundred seventy-three".