688138263255 has 8 divisors (see below), whose sum is σ = 1101021221232. Its totient is φ = 367007073728.

The previous prime is 688138263217. The next prime is 688138263257. The reversal of 688138263255 is 552362831886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 688138263255 - 2¹⁵ = 688138230487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 688138263195 and 688138263204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688138263257) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22937942094 + ... + 22937942123.

It is an arithmetic number, because the mean of its divisors is an integer number (137627652654).

Almost surely, 2^688138263255 is an apocalyptic number.

688138263255 is a deficient number, since it is larger than the sum of its proper divisors (412882957977).

688138263255 is a wasteful number, since it uses less digits than its factorization.

688138263255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45875884225.

The product of its digits is 16588800, while the sum is 57.

The spelling of 688138263255 in words is "six hundred eighty-eight billion, one hundred thirty-eight million, two hundred sixty-three thousand, two hundred fifty-five".