238145895017 has 4 divisors (see below), whose sum is σ = 244582270596. Its totient is φ = 231709519440.

The previous prime is 238145895011. The next prime is 238145895059. The reversal of 238145895017 is 710598541832.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181206867856 + 56939027161 = 425684^2 + 238619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238145895017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238145895017.

It is not an unprimeable number, because it can be changed into a prime (238145895011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3218187734 + ... + 3218187807.

It is an arithmetic number, because the mean of its divisors is an integer number (61145567649).

Almost surely, 2^238145895017 is an apocalyptic number.

It is an amenable number.

238145895017 is a deficient number, since it is larger than the sum of its proper divisors (6436375579).

238145895017 is an equidigital number, since it uses as much as digits as its factorization.

238145895017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436375578.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 238145895017 in words is "two hundred thirty-eight billion, one hundred forty-five million, eight hundred ninety-five thousand, seventeen".