239218561422864 has 45 divisors (see below), whose sum is σ = 669480243405519. Its totient is φ = 79739458607520.

The previous prime is 239218561422829. The next prime is 239218561422877. The reversal of 239218561422864 is 468224165812932.

It is a happy number.

The square root of 239218561422864 is 15466692.

It is a perfect power (a square), and thus also a powerful number.

239218561422864 is a `hidden beast` number, since 2 + 3 + 9 + 2 + 1 + 8 + 5 + 614 + 2 + 2 + 8 + 6 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 184955859 + ... + 186244749.

Almost surely, 2^{239218561422864} is an apocalyptic number.

239218561422864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

239218561422864 is the 15466692-nd square number.

It is an amenable number.

239218561422864 is an abundant number, since it is smaller than the sum of its proper divisors (430261681982655).

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

239218561422864 is an frugal number, since it uses more digits than its factorization.

239218561422864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577796 (or 1288896 counting only the distinct ones).

The product of its digits is 79626240, while the sum is 63.

The spelling of 239218561422864 in words is "two hundred thirty-nine trillion, two hundred eighteen billion, five hundred sixty-one million, four hundred twenty-two thousand, eight hundred sixty-four".