35564561143681 has 2 divisors, whose sum is σ = 35564561143682. Its totient is φ = 35564561143680.

The previous prime is 35564561143523. The next prime is 35564561143751. The reversal of 35564561143681 is 18634116546553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35288542253056 + 276018890625 = 5940416^2 + 525375^2 .

It is a cyclic number.

It is not a de Polignac number, because 35564561143681 - 2¹¹ = 35564561141633 is a prime.

It is a super-2 number, since 2×35564561143681² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (35564561113681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17782280571840 + 17782280571841.

It is an arithmetic number, because the mean of its divisors is an integer number (17782280571841).

Almost surely, 2^{35564561143681} is an apocalyptic number.

It is an amenable number.

35564561143681 is a deficient number, since it is larger than the sum of its proper divisors (1).

35564561143681 is an equidigital number, since it uses as much as digits as its factorization.

35564561143681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104000, while the sum is 58.

The spelling of 35564561143681 in words is "thirty-five trillion, five hundred sixty-four billion, five hundred sixty-one million, one hundred forty-three thousand, six hundred eighty-one".