43189717888481 has 2 divisors, whose sum is σ = 43189717888482. Its totient is φ = 43189717888480.

The previous prime is 43189717888477. The next prime is 43189717888523. The reversal of 43189717888481 is 18488871798134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38816638090000 + 4373079798481 = 6230300^2 + 2091191^2 .

It is a cyclic number.

It is not a de Polignac number, because 43189717888481 - 2² = 43189717888477 is a prime.

It is a super-2 number, since 2×43189717888481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43189717888441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21594858944240 + 21594858944241.

It is an arithmetic number, because the mean of its divisors is an integer number (21594858944241).

Almost surely, 2^{43189717888481} is an apocalyptic number.

It is an amenable number.

43189717888481 is a deficient number, since it is larger than the sum of its proper divisors (1).

43189717888481 is an equidigital number, since it uses as much as digits as its factorization.

43189717888481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 693633024, while the sum is 77.

The spelling of 43189717888481 in words is "forty-three trillion, one hundred eighty-nine billion, seven hundred seventeen million, eight hundred eighty-eight thousand, four hundred eighty-one".