243428822999 has 2 divisors, whose sum is σ = 243428823000. Its totient is φ = 243428822998.

The previous prime is 243428822969. The next prime is 243428823019. The reversal of 243428822999 is 999228824342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243428822999 - 2⁸ = 243428822743 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243428822929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121714411499 + 121714411500.

It is an arithmetic number, because the mean of its divisors is an integer number (121714411500).

Almost surely, 2^243428822999 is an apocalyptic number.

243428822999 is a deficient number, since it is larger than the sum of its proper divisors (1).

243428822999 is an equidigital number, since it uses as much as digits as its factorization.

243428822999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35831808, while the sum is 62.

The spelling of 243428822999 in words is "two hundred forty-three billion, four hundred twenty-eight million, eight hundred twenty-two thousand, nine hundred ninety-nine".