43195054249 has 2 divisors, whose sum is σ = 43195054250. Its totient is φ = 43195054248.

The previous prime is 43195054207. The next prime is 43195054289. The reversal of 43195054249 is 94245059134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39877294249 + 3317760000 = 199693^2 + 57600^2 .

It is a cyclic number.

It is not a de Polignac number, because 43195054249 - 2²¹ = 43192957097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43195054199 and 43195054208.

It is not a weakly prime, because it can be changed into another prime (43195054289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21597527124 + 21597527125.

It is an arithmetic number, because the mean of its divisors is an integer number (21597527125).

Almost surely, 2^43195054249 is an apocalyptic number.

It is an amenable number.

43195054249 is a deficient number, since it is larger than the sum of its proper divisors (1).

43195054249 is an equidigital number, since it uses as much as digits as its factorization.

43195054249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 43195054249 in words is "forty-three billion, one hundred ninety-five million, fifty-four thousand, two hundred forty-nine".