238776433812 has 144 divisors (see below), whose sum is σ = 698343260160. Its totient is φ = 67380289344.

The previous prime is 238776433793. The next prime is 238776433853. The reversal of 238776433812 is 218334677832.

238776433812 is a `hidden beast` number, since 238 + 7 + 7 + 64 + 338 + 12 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9929139 + ... + 9953157.

Almost surely, 2^238776433812 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 238776433812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349171630080).

238776433812 is an abundant number, since it is smaller than the sum of its proper divisors (459566826348).

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

238776433812 is a wasteful number, since it uses less digits than its factorization.

238776433812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24522 (or 24517 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The spelling of 238776433812 in words is "two hundred thirty-eight billion, seven hundred seventy-six million, four hundred thirty-three thousand, eight hundred twelve".