342135375351661 has 2 divisors, whose sum is σ = 342135375351662. Its totient is φ = 342135375351660.

The previous prime is 342135375351559. The next prime is 342135375351673. The reversal of 342135375351661 is 166153573531243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307328738270436 + 34806637081225 = 17530794^2 + 5899715^2 .

It is a cyclic number.

It is not a de Polignac number, because 342135375351661 - 2⁷ = 342135375351533 is a prime.

It is a super-2 number, since 2×342135375351661² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342135375351461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171067687675830 + 171067687675831.

It is an arithmetic number, because the mean of its divisors is an integer number (171067687675831).

Almost surely, 2^{342135375351661} is an apocalyptic number.

It is an amenable number.

342135375351661 is a deficient number, since it is larger than the sum of its proper divisors (1).

342135375351661 is an equidigital number, since it uses as much as digits as its factorization.

342135375351661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412000, while the sum is 55.

The spelling of 342135375351661 in words is "three hundred forty-two trillion, one hundred thirty-five billion, three hundred seventy-five million, three hundred fifty-one thousand, six hundred sixty-one".