238723820858880 has 1440 divisors, whose sum is σ = 987923687122944. Its totient is φ = 52159165857792.

The previous prime is 238723820858819. The next prime is 238723820858891. The reversal of 238723820858880 is 88858028327832.

238723820858880 is a `hidden beast` number, since 2 + 3 + 8 + 7 + 2 + 38 + 2 + 0 + 8 + 588 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 238723820858799 and 238723820858808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 15319495569 + ... + 15319511151.

Almost surely, 2^{238723820858880} is an apocalyptic number.

238723820858880 is a gapful number since it is divisible by the number (20) 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 238723820858880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493961843561472).

238723820858880 is an abundant number, since it is smaller than the sum of its proper divisors (749199866264064).

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

238723820858880 is a wasteful number, since it uses less digits than its factorization.

238723820858880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15756 (or 15690 counting only the distinct ones).

The product of its (nonzero) digits is 660602880, while the sum is 72.

The spelling of 238723820858880 in words is "two hundred thirty-eight trillion, seven hundred twenty-three billion, eight hundred twenty million, eight hundred fifty-eight thousand, eight hundred eighty".