239531658368 has 72 divisors (see below), whose sum is σ = 481859072865. Its totient is φ = 118605795840.

The previous prime is 239531658349. The next prime is 239531658389. The reversal of 239531658368 is 863856135932.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 144771118144 + 94760540224 = 380488^2 + 307832^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=346072.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1002224393 + ... + 1002224631.

Almost surely, 2^239531658368 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 239531658368

239531658368 is an abundant number, since it is smaller than the sum of its proper divisors (242327414497).

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

239531658368 is an frugal number, since it uses more digits than its factorization.

239531658368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 422 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 59.

The spelling of 239531658368 in words is "two hundred thirty-nine billion, five hundred thirty-one million, six hundred fifty-eight thousand, three hundred sixty-eight".