243201015583 has 2 divisors, whose sum is σ = 243201015584. Its totient is φ = 243201015582.

The previous prime is 243201015529. The next prime is 243201015611. The reversal of 243201015583 is 385510102342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243201015583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243201015283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121600507791 + 121600507792.

It is an arithmetic number, because the mean of its divisors is an integer number (121600507792).

Almost surely, 2^243201015583 is an apocalyptic number.

243201015583 is a deficient number, since it is larger than the sum of its proper divisors (1).

243201015583 is an equidigital number, since it uses as much as digits as its factorization.

243201015583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 243201015583 in words is "two hundred forty-three billion, two hundred one million, fifteen thousand, five hundred eighty-three".