43195054817 has 2 divisors, whose sum is σ = 43195054818. Its totient is φ = 43195054816.

The previous prime is 43195054813. The next prime is 43195054831. The reversal of 43195054817 is 71845059134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22369390096 + 20825664721 = 149564^2 + 144311^2 .

It is a cyclic number.

It is not a de Polignac number, because 43195054817 - 2² = 43195054813 is a prime.

It is not a weakly prime, because it can be changed into another prime (43195054811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21597527408 + 21597527409.

It is an arithmetic number, because the mean of its divisors is an integer number (21597527409).

Almost surely, 2^43195054817 is an apocalyptic number.

It is an amenable number.

43195054817 is a deficient number, since it is larger than the sum of its proper divisors (1).

43195054817 is an equidigital number, since it uses as much as digits as its factorization.

43195054817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 43195054817 in words is "forty-three billion, one hundred ninety-five million, fifty-four thousand, eight hundred seventeen".