64000043 has 2 divisors, whose sum is σ = 64000044. Its totient is φ = 64000042.

The previous prime is 64000031. The next prime is 64000051. The reversal of 64000043 is 34000046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64000043 - 2⁶ = 63999979 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 63999985 and 64000030.

It is not a weakly prime, because it can be changed into another prime (64000063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32000021 + 32000022.

It is an arithmetic number, because the mean of its divisors is an integer number (32000022).

Almost surely, 2^64000043 is an apocalyptic number.

64000043 is a deficient number, since it is larger than the sum of its proper divisors (1).

64000043 is an equidigital number, since it uses as much as digits as its factorization.

64000043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 64000043 is about 8000.0026874995. The cubic root of 64000043 is about 400.0000895833. Note that the first 4 decimals are identical.

Adding to 64000043 its reverse (34000046), we get a palindrome (98000089).

The spelling of 64000043 in words is "sixty-four million, forty-three", and thus it is an aban number.