243948671983 has 2 divisors, whose sum is σ = 243948671984. Its totient is φ = 243948671982.

The previous prime is 243948671957. The next prime is 243948672043. The reversal of 243948671983 is 389176849342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243948671983 - 2⁵ = 243948671951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243948672983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121974335991 + 121974335992.

It is an arithmetic number, because the mean of its divisors is an integer number (121974335992).

Almost surely, 2^243948671983 is an apocalyptic number.

243948671983 is a deficient number, since it is larger than the sum of its proper divisors (1).

243948671983 is an equidigital number, since it uses as much as digits as its factorization.

243948671983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62705664, while the sum is 64.

The spelling of 243948671983 in words is "two hundred forty-three billion, nine hundred forty-eight million, six hundred seventy-one thousand, nine hundred eighty-three".