239855136768 has 728 divisors, whose sum is σ = 800162145888. Its totient is φ = 71376961536.

The previous prime is 239855136751. The next prime is 239855136769. The reversal of 239855136768 is 867631558932.

239855136768 is a `hidden beast` number, since 2 + 3 + 9 + 8 + 551 + 3 + 6 + 76 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239855136769) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1436258221 + ... + 1436258387.

Almost surely, 2^239855136768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239855136768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400081072944).

239855136768 is an abundant number, since it is smaller than the sum of its proper divisors (560307009120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

239855136768 is an equidigital number, since it uses as much as digits as its factorization.

239855136768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 222 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The spelling of 239855136768 in words is "two hundred thirty-nine billion, eight hundred fifty-five million, one hundred thirty-six thousand, seven hundred sixty-eight".