100173203109 has 24 divisors (see below), whose sum is σ = 168883703040. Its totient is φ = 56023917408.

The previous prime is 100173203089. The next prime is 100173203209. The reversal of 100173203109 is 901302371001.

100173203109 is a `hidden beast` number, since 10 + 0 + 17 + 320 + 310 + 9 = 666.

It is not a de Polignac number, because 100173203109 - 2¹² = 100173199013 is a prime.

It is a super-2 number, since 2×100173203109² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100173203209) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 16912474 + ... + 16918395.

It is an arithmetic number, because the mean of its divisors is an integer number (7036820960).

Almost surely, 2^100173203109 is an apocalyptic number.

It is an amenable number.

100173203109 is a deficient number, since it is larger than the sum of its proper divisors (68710499931).

100173203109 is a wasteful number, since it uses less digits than its factorization.

100173203109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33830929 (or 33830926 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The spelling of 100173203109 in words is "one hundred billion, one hundred seventy-three million, two hundred three thousand, one hundred nine".