108173499621201 has 27 divisors (see below), whose sum is σ = 181761281324571. Its totient is φ = 61813303547184.

The previous prime is 108173499621151. The next prime is 108173499621203. The reversal of 108173499621201 is 102126994371801.

The square root of 108173499621201 is 10400649.

It is a perfect power (a square), and thus also a powerful number.

108173499621201 is a `hidden beast` number, since 1 + 0 + 8 + 1 + 7 + 3 + 4 + 9 + 9 + 621 + 2 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1952030916801 + 106221468704400 = 1397151^2 + 10306380^2 .

It is not a de Polignac number, because 108173499621201 - 2¹¹ = 108173499619153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108173499621203) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 218165995 + ... + 218661263.

Almost surely, 2^{108173499621201} is an apocalyptic number.

108173499621201 is the 10400649-th square number.

108173499621201 is the 5200325-th centered octagonal number.

It is an amenable number.

108173499621201 is a deficient number, since it is larger than the sum of its proper divisors (73587781703370).

108173499621201 is an frugal number, since it uses more digits than its factorization.

108173499621201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990558 (or 495279 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 108173499621201 in words is "one hundred eight trillion, one hundred seventy-three billion, four hundred ninety-nine million, six hundred twenty-one thousand, two hundred one".