43985363243 has 2 divisors, whose sum is σ = 43985363244. Its totient is φ = 43985363242.

The previous prime is 43985363209. The next prime is 43985363249. The reversal of 43985363243 is 34236358934.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43985363243 - 2⁶ = 43985363179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43985363191 and 43985363200.

It is not a weakly prime, because it can be changed into another prime (43985363249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21992681621 + 21992681622.

It is an arithmetic number, because the mean of its divisors is an integer number (21992681622).

Almost surely, 2^43985363243 is an apocalyptic number.

43985363243 is a deficient number, since it is larger than the sum of its proper divisors (1).

43985363243 is an equidigital number, since it uses as much as digits as its factorization.

43985363243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 50.

The spelling of 43985363243 in words is "forty-three billion, nine hundred eighty-five million, three hundred sixty-three thousand, two hundred forty-three".