108640360686 has 128 divisors (see below), whose sum is σ = 265333501440. Its totient is φ = 29200550400.

The previous prime is 108640360567. The next prime is 108640360693. The reversal of 108640360686 is 686063046801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5239756 + ... + 5260448.

It is an arithmetic number, because the mean of its divisors is an integer number (2072917980).

Almost surely, 2^108640360686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108640360686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132666750720).

108640360686 is an abundant number, since it is smaller than the sum of its proper divisors (156693140754).

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

108640360686 is a wasteful number, since it uses less digits than its factorization.

108640360686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20962.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 108640360686 in words is "one hundred eight billion, six hundred forty million, three hundred sixty thousand, six hundred eighty-six".