243244968947 has 2 divisors, whose sum is σ = 243244968948. Its totient is φ = 243244968946.

The previous prime is 243244968917. The next prime is 243244968983. The reversal of 243244968947 is 749869442342.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243244968947 - 2²⁸ = 242976533491 is a prime.

It is a super-2 number, since 2×243244968947² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243244968947.

It is not a weakly prime, because it can be changed into another prime (243244968917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121622484473 + 121622484474.

It is an arithmetic number, because the mean of its divisors is an integer number (121622484474).

Almost surely, 2^243244968947 is an apocalyptic number.

243244968947 is a deficient number, since it is larger than the sum of its proper divisors (1).

243244968947 is an equidigital number, since it uses as much as digits as its factorization.

243244968947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83607552, while the sum is 62.

The spelling of 243244968947 in words is "two hundred forty-three billion, two hundred forty-four million, nine hundred sixty-eight thousand, nine hundred forty-seven".