43540143193 has 2 divisors, whose sum is σ = 43540143194. Its totient is φ = 43540143192.

The previous prime is 43540143173. The next prime is 43540143223. The reversal of 43540143193 is 39134104534.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41962703104 + 1577440089 = 204848^2 + 39717^2 .

It is a cyclic number.

It is not a de Polignac number, because 43540143193 - 2²⁹ = 43003272281 is a prime.

It is not a weakly prime, because it can be changed into another prime (43540143133) 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, 21770071596 + 21770071597.

It is an arithmetic number, because the mean of its divisors is an integer number (21770071597).

Almost surely, 2^43540143193 is an apocalyptic number.

It is an amenable number.

43540143193 is a deficient number, since it is larger than the sum of its proper divisors (1).

43540143193 is an equidigital number, since it uses as much as digits as its factorization.

43540143193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 43540143193 in words is "forty-three billion, five hundred forty million, one hundred forty-three thousand, one hundred ninety-three".