2004342323561 has 2 divisors, whose sum is σ = 2004342323562. Its totient is φ = 2004342323560.

The previous prime is 2004342323479. The next prime is 2004342323593. The reversal of 2004342323561 is 1653232434002.

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., 1880790073561 + 123552250000 = 1371419^2 + 351500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2004342323561 - 2²² = 2004338129257 is a prime.

It is not a weakly prime, because it can be changed into another prime (2004342623561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002171161780 + 1002171161781.

It is an arithmetic number, because the mean of its divisors is an integer number (1002171161781).

Almost surely, 2^{2004342323561} is an apocalyptic number.

It is an amenable number.

2004342323561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004342323561 is an equidigital number, since it uses as much as digits as its factorization.

2004342323561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 2004342323561 its reverse (1653232434002), we get a palindrome (3657574757563).

The spelling of 2004342323561 in words is "two trillion, four billion, three hundred forty-two million, three hundred twenty-three thousand, five hundred sixty-one".