238732785640 has 16 divisors (see below), whose sum is σ = 537148767780. Its totient is φ = 95493114240.

The previous prime is 238732785623. The next prime is 238732785653. The reversal of 238732785640 is 46587237832.

It is a happy number.

238732785640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 205026028804 + 33706756836 = 452798^2 + 183594^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2984159781 + ... + 2984159860.

Almost surely, 2^238732785640 is an apocalyptic number.

238732785640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238732785640 is an abundant number, since it is smaller than the sum of its proper divisors (298415982140).

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

238732785640 is a wasteful number, since it uses less digits than its factorization.

238732785640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5968319652 (or 5968319648 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 238732785640 in words is "two hundred thirty-eight billion, seven hundred thirty-two million, seven hundred eighty-five thousand, six hundred forty".