243350998973 has 2 divisors, whose sum is σ = 243350998974. Its totient is φ = 243350998972.

The previous prime is 243350998949. The next prime is 243350998981. The reversal of 243350998973 is 379899053342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142504740004 + 100846258969 = 377498^2 + 317563^2 .

It is a cyclic number.

It is not a de Polignac number, because 243350998973 - 2⁸ = 243350998717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243350998993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121675499486 + 121675499487.

It is an arithmetic number, because the mean of its divisors is an integer number (121675499487).

Almost surely, 2^243350998973 is an apocalyptic number.

It is an amenable number.

243350998973 is a deficient number, since it is larger than the sum of its proper divisors (1).

243350998973 is an equidigital number, since it uses as much as digits as its factorization.

243350998973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44089920, while the sum is 62.

The spelling of 243350998973 in words is "two hundred forty-three billion, three hundred fifty million, nine hundred ninety-eight thousand, nine hundred seventy-three".