43243504247 has 2 divisors, whose sum is σ = 43243504248. Its totient is φ = 43243504246.

The previous prime is 43243504243. The next prime is 43243504301. The reversal of 43243504247 is 74240534234.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43243504247 - 2² = 43243504243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43243504247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43243504243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21621752123 + 21621752124.

It is an arithmetic number, because the mean of its divisors is an integer number (21621752124).

Almost surely, 2^43243504247 is an apocalyptic number.

43243504247 is a deficient number, since it is larger than the sum of its proper divisors (1).

43243504247 is an equidigital number, since it uses as much as digits as its factorization.

43243504247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 38.

The spelling of 43243504247 in words is "forty-three billion, two hundred forty-three million, five hundred four thousand, two hundred forty-seven".