238766828667833 has 4 divisors (see below), whose sum is σ = 238832586542208. Its totient is φ = 238701070793460.

The previous prime is 238766828667827. The next prime is 238766828667863. The reversal of 238766828667833 is 338766828667832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238766828667833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238766828667803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32878931741 + ... + 32878939002.

It is an arithmetic number, because the mean of its divisors is an integer number (59708146635552).

Almost surely, 2^{238766828667833} is an apocalyptic number.

It is an amenable number.

238766828667833 is a deficient number, since it is larger than the sum of its proper divisors (65757874375).

238766828667833 is an equidigital number, since it uses as much as digits as its factorization.

238766828667833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65757874374.

The product of its digits is 28092137472, while the sum is 83.

Subtracting 238766828667833 from its reverse (338766828667832), we obtain a palindrome (99999999999999).

The spelling of 238766828667833 in words is "two hundred thirty-eight trillion, seven hundred sixty-six billion, eight hundred twenty-eight million, six hundred sixty-seven thousand, eight hundred thirty-three".