288338338381 has 4 divisors (see below), whose sum is σ = 289141509600. Its totient is φ = 287535167164.

The previous prime is 288338338373. The next prime is 288338338397. The reversal of 288338338381 is 183833833882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 288338338381 - 2³ = 288338338373 is a prime.

It is a super-2 number, since 2×288338338381² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288338338181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401585071 + ... + 401585788.

It is an arithmetic number, because the mean of its divisors is an integer number (72285377400).

Almost surely, 2^288338338381 is an apocalyptic number.

It is an amenable number.

288338338381 is a deficient number, since it is larger than the sum of its proper divisors (803171219).

288338338381 is an equidigital number, since it uses as much as digits as its factorization.

288338338381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803171218.

The product of its digits is 15925248, while the sum is 58.

The spelling of 288338338381 in words is "two hundred eighty-eight billion, three hundred thirty-eight million, three hundred thirty-eight thousand, three hundred eighty-one".