238800765209 has 2 divisors, whose sum is σ = 238800765210. Its totient is φ = 238800765208.

The previous prime is 238800765167. The next prime is 238800765277. The reversal of 238800765209 is 902567008832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210162649225 + 28638115984 = 458435^2 + 169228^2 .

It is a cyclic number.

It is not a de Polignac number, because 238800765209 - 2¹⁶ = 238800699673 is a prime.

It is not a weakly prime, because it can be changed into another prime (238800765299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119400382604 + 119400382605.

It is an arithmetic number, because the mean of its divisors is an integer number (119400382605).

Almost surely, 2^238800765209 is an apocalyptic number.

It is an amenable number.

238800765209 is a deficient number, since it is larger than the sum of its proper divisors (1).

238800765209 is an equidigital number, since it uses as much as digits as its factorization.

238800765209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 238800765209 in words is "two hundred thirty-eight billion, eight hundred million, seven hundred sixty-five thousand, two hundred nine".