8543289646081 has 2 divisors, whose sum is σ = 8543289646082. Its totient is φ = 8543289646080.

The previous prime is 8543289646049. The next prime is 8543289646093. The reversal of 8543289646081 is 1806469823458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8081460669681 + 461828976400 = 2842791^2 + 679580^2 .

It is a cyclic number.

It is not a de Polignac number, because 8543289646081 - 2⁵ = 8543289646049 is a prime.

It is a super-2 number, since 2×8543289646081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8543289646181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4271644823040 + 4271644823041.

It is an arithmetic number, because the mean of its divisors is an integer number (4271644823041).

Almost surely, 2^{8543289646081} is an apocalyptic number.

It is an amenable number.

8543289646081 is a deficient number, since it is larger than the sum of its proper divisors (1).

8543289646081 is an equidigital number, since it uses as much as digits as its factorization.

8543289646081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79626240, while the sum is 64.

The spelling of 8543289646081 in words is "eight trillion, five hundred forty-three billion, two hundred eighty-nine million, six hundred forty-six thousand, eighty-one".