43128171803 has 2 divisors, whose sum is σ = 43128171804. Its totient is φ = 43128171802.

The previous prime is 43128171799. The next prime is 43128171829. The reversal of 43128171803 is 30817182134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43128171803 - 2² = 43128171799 is a prime.

It is not a weakly prime, because it can be changed into another prime (43128171833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21564085901 + 21564085902.

It is an arithmetic number, because the mean of its divisors is an integer number (21564085902).

Almost surely, 2^43128171803 is an apocalyptic number.

43128171803 is a deficient number, since it is larger than the sum of its proper divisors (1).

43128171803 is an equidigital number, since it uses as much as digits as its factorization.

43128171803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 43128171803 in words is "forty-three billion, one hundred twenty-eight million, one hundred seventy-one thousand, eight hundred three".