43068576323221 has 2 divisors, whose sum is σ = 43068576323222. Its totient is φ = 43068576323220.

The previous prime is 43068576323197. The next prime is 43068576323251. The reversal of 43068576323221 is 12232367586034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40773154368996 + 2295421954225 = 6385386^2 + 1515065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43068576323221 is a prime.

It is a super-2 number, since 2×43068576323221² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43068576323251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21534288161610 + 21534288161611.

It is an arithmetic number, because the mean of its divisors is an integer number (21534288161611).

Almost surely, 2^{43068576323221} is an apocalyptic number.

It is an amenable number.

43068576323221 is a deficient number, since it is larger than the sum of its proper divisors (1).

43068576323221 is an equidigital number, since it uses as much as digits as its factorization.

43068576323221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8709120, while the sum is 52.

The spelling of 43068576323221 in words is "forty-three trillion, sixty-eight billion, five hundred seventy-six million, three hundred twenty-three thousand, two hundred twenty-one".