238657773984 has 144 divisors (see below), whose sum is σ = 728967254400. Its totient is φ = 68168411136.

The previous prime is 238657773983. The next prime is 238657774007. The reversal of 238657773984 is 489377756832.

It is not an unprimeable number, because it can be changed into a prime (238657773983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27462312 + ... + 27471000.

It is an arithmetic number, because the mean of its divisors is an integer number (5062272600).

Almost surely, 2^238657773984 is an apocalyptic number.

238657773984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238657773984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364483627200).

238657773984 is an abundant number, since it is smaller than the sum of its proper divisors (490309480416).

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

238657773984 is a wasteful number, since it uses less digits than its factorization.

238657773984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14555 (or 14540 counting only the distinct ones).

The product of its digits is 426746880, while the sum is 69.

The spelling of 238657773984 in words is "two hundred thirty-eight billion, six hundred fifty-seven million, seven hundred seventy-three thousand, nine hundred eighty-four".