108639520712 has 12 divisors (see below), whose sum is σ = 203700849345. Its totient is φ = 54319294224.

The previous prime is 108639520679. The next prime is 108639520721. The reversal of 108639520712 is 217025936801.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 104221791556 + 4417729156 = 322834^2 + 66466^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=233066.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 873998 + ... + 990530.

Almost surely, 2^108639520712 is an apocalyptic number.

It is an amenable number.

108639520712 is a deficient number, since it is larger than the sum of its proper divisors (95061328633).

108639520712 is an frugal number, since it uses more digits than its factorization.

108639520712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233072 (or 116535 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 108639520712 in words is "one hundred eight billion, six hundred thirty-nine million, five hundred twenty thousand, seven hundred twelve".