238833570161 has 2 divisors, whose sum is σ = 238833570162. Its totient is φ = 238833570160.

The previous prime is 238833570137. The next prime is 238833570203. The reversal of 238833570161 is 161075338832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237987865600 + 845704561 = 487840^2 + 29081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238833570161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (238833570361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119416785080 + 119416785081.

It is an arithmetic number, because the mean of its divisors is an integer number (119416785081).

Almost surely, 2^238833570161 is an apocalyptic number.

It is an amenable number.

238833570161 is a deficient number, since it is larger than the sum of its proper divisors (1).

238833570161 is an equidigital number, since it uses as much as digits as its factorization.

238833570161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 238833570161 in words is "two hundred thirty-eight billion, eight hundred thirty-three million, five hundred seventy thousand, one hundred sixty-one".