238581881641216 has 81 divisors (see below), whose sum is σ = 493234674350691. Its totient is φ = 115174000177152.

The previous prime is 238581881641199. The next prime is 238581881641277. The reversal of 238581881641216 is 612146188185832.

The square root of 238581881641216 is 15446096.

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

It can be written as a sum of positive squares in 4 ways, for example, as 72200776386816 + 166381105254400 = 8497104^2 + 12898880^2 .

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 7166971900 + ... + 7167005188.

Almost surely, 2^{238581881641216} is an apocalyptic number.

238581881641216 is the 15446096-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238581881641216

238581881641216 is an abundant number, since it is smaller than the sum of its proper divisors (254652792709475).

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

238581881641216 is an frugal number, since it uses more digits than its factorization.

238581881641216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66652 (or 33320 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 64.

238581881641216 divided by its sum of digits (64) gives a square (3727841900644 = 1930762²).

The spelling of 238581881641216 in words is "two hundred thirty-eight trillion, five hundred eighty-one billion, eight hundred eighty-one million, six hundred forty-one thousand, two hundred sixteen".