43084613021 has 2 divisors, whose sum is σ = 43084613022. Its totient is φ = 43084613020.

The previous prime is 43084613003. The next prime is 43084613023. The reversal of 43084613021 is 12031648034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43068700900 + 15912121 = 207530^2 + 3989^2 .

It is a cyclic number.

It is not a de Polignac number, because 43084613021 - 2⁶ = 43084612957 is a prime.

Together with 43084613023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43084613023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21542306510 + 21542306511.

It is an arithmetic number, because the mean of its divisors is an integer number (21542306511).

Almost surely, 2^43084613021 is an apocalyptic number.

It is an amenable number.

43084613021 is a deficient number, since it is larger than the sum of its proper divisors (1).

43084613021 is an equidigital number, since it uses as much as digits as its factorization.

43084613021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 43084613021 in words is "forty-three billion, eighty-four million, six hundred thirteen thousand, twenty-one".