238991115264 has 132 divisors (see below), whose sum is σ = 700172943792. Its totient is φ = 72421437440.

The previous prime is 238991115239. The next prime is 238991115287. The reversal of 238991115264 is 462511199832.

It is a tau number, because it is divible by the number of its divisors (132).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50239 + ... + 693185.

Almost surely, 2^238991115264 is an apocalyptic number.

238991115264 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 238991115264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350086471896).

238991115264 is an abundant number, since it is smaller than the sum of its proper divisors (461181828528).

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

238991115264 is a wasteful number, since it uses less digits than its factorization.

238991115264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642992 (or 642963 counting only the distinct ones).

The product of its digits is 933120, while the sum is 51.

The spelling of 238991115264 in words is "two hundred thirty-eight billion, nine hundred ninety-one million, one hundred fifteen thousand, two hundred sixty-four".