108234721681 has 16 divisors (see below), whose sum is σ = 116012431360. Its totient is φ = 100681781760.

The previous prime is 108234721667. The next prime is 108234721709. The reversal of 108234721681 is 186127432801.

It is a cyclic number.

It is not a de Polignac number, because 108234721681 - 2¹⁷ = 108234590609 is a prime.

It is a super-2 number, since 2×108234721681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108234721381) 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 15 ways as a sum of consecutive naturals, for example, 2851 + ... + 465271.

It is an arithmetic number, because the mean of its divisors is an integer number (7250776960).

Almost surely, 2^108234721681 is an apocalyptic number.

It is an amenable number.

108234721681 is a deficient number, since it is larger than the sum of its proper divisors (7777709679).

108234721681 is a wasteful number, since it uses less digits than its factorization.

108234721681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462664.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 108234721681 in words is "one hundred eight billion, two hundred thirty-four million, seven hundred twenty-one thousand, six hundred eighty-one".