242853355612789 has 2 divisors, whose sum is σ = 242853355612790. Its totient is φ = 242853355612788.

The previous prime is 242853355612781. The next prime is 242853355612801. The reversal of 242853355612789 is 987216553358242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172605204684900 + 70248150927889 = 13137930^2 + 8381417^2 .

It is a cyclic number.

It is not a de Polignac number, because 242853355612789 - 2³ = 242853355612781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242853355612781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121426677806394 + 121426677806395.

It is an arithmetic number, because the mean of its divisors is an integer number (121426677806395).

Almost surely, 2^{242853355612789} is an apocalyptic number.

It is an amenable number.

242853355612789 is a deficient number, since it is larger than the sum of its proper divisors (1).

242853355612789 is an equidigital number, since it uses as much as digits as its factorization.

242853355612789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912000, while the sum is 70.

The spelling of 242853355612789 in words is "two hundred forty-two trillion, eight hundred fifty-three billion, three hundred fifty-five million, six hundred twelve thousand, seven hundred eighty-nine".