108638681859568 has 160 divisors (see below), whose sum is σ = 252174632647680. Its totient is φ = 44329645578240.

The previous prime is 108638681859541. The next prime is 108638681859571. The reversal of 108638681859568 is 865958186836801.

It is a junction number, because it is equal to n+sod(n) for n = 108638681859491 and 108638681859500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3263484268 + ... + 3263517556.

It is an arithmetic number, because the mean of its divisors is an integer number (1576091454048).

Almost surely, 2^{108638681859568} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108638681859568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126087316323840).

108638681859568 is an abundant number, since it is smaller than the sum of its proper divisors (143535950788112).

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

108638681859568 is a wasteful number, since it uses less digits than its factorization.

108638681859568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39135 (or 39129 counting only the distinct ones).

The product of its (nonzero) digits is 4777574400, while the sum is 82.

The spelling of 108638681859568 in words is "one hundred eight trillion, six hundred thirty-eight billion, six hundred eighty-one million, eight hundred fifty-nine thousand, five hundred sixty-eight".