142535246511661 has 2 divisors, whose sum is σ = 142535246511662. Its totient is φ = 142535246511660.

The previous prime is 142535246511589. The next prime is 142535246511719. The reversal of 142535246511661 is 166115642535241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136490876750761 + 6044369760900 = 11682931^2 + 2458530^2 .

It is a cyclic number.

It is not a de Polignac number, because 142535246511661 - 2⁴¹ = 140336223256109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142535246511599 and 142535246511608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142535246011661) 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, 71267623255830 + 71267623255831.

It is an arithmetic number, because the mean of its divisors is an integer number (71267623255831).

Almost surely, 2^{142535246511661} is an apocalyptic number.

It is an amenable number.

142535246511661 is a deficient number, since it is larger than the sum of its proper divisors (1).

142535246511661 is an equidigital number, since it uses as much as digits as its factorization.

142535246511661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184000, while the sum is 52.

The spelling of 142535246511661 in words is "one hundred forty-two trillion, five hundred thirty-five billion, two hundred forty-six million, five hundred eleven thousand, six hundred sixty-one".