8201561341 has 2 divisors, whose sum is σ = 8201561342. Its totient is φ = 8201561340.

The previous prime is 8201561339. The next prime is 8201561351. The reversal of 8201561341 is 1431651028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5442160441 + 2759400900 = 73771^2 + 52530^2 .

It is a cyclic number.

It is not a de Polignac number, because 8201561341 - 2¹ = 8201561339 is a prime.

It is a super-4 number, since 4×8201561341⁴ (a number of 41 digits) contains 4444 as substring.

Together with 8201561339, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8201561351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4100780670 + 4100780671.

It is an arithmetic number, because the mean of its divisors is an integer number (4100780671).

Almost surely, 2^8201561341 is an apocalyptic number.

It is an amenable number.

8201561341 is a deficient number, since it is larger than the sum of its proper divisors (1).

8201561341 is an equidigital number, since it uses as much as digits as its factorization.

8201561341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 8201561341 is about 90562.4720345022. The cubic root of 8201561341 is about 2016.6576545128.

The spelling of 8201561341 in words is "eight billion, two hundred one million, five hundred sixty-one thousand, three hundred forty-one".