109173990051 has 64 divisors (see below), whose sum is σ = 186887500800. Its totient is φ = 61697894400.

The previous prime is 109173990041. The next prime is 109173990109. The reversal of 109173990051 is 150099371901.

It is a happy number.

It is not a de Polignac number, because 109173990051 - 2⁹ = 109173989539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109173989979 and 109173990006.

It is not an unprimeable number, because it can be changed into a prime (109173990031) 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 63 ways as a sum of consecutive naturals, for example, 11758531 + ... + 11767811.

It is an arithmetic number, because the mean of its divisors is an integer number (2920117200).

Almost surely, 2^109173990051 is an apocalyptic number.

109173990051 is a deficient number, since it is larger than the sum of its proper divisors (77713510749).

109173990051 is a wasteful number, since it uses less digits than its factorization.

109173990051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9977 (or 9971 counting only the distinct ones).

The product of its (nonzero) digits is 76545, while the sum is 45.

The spelling of 109173990051 in words is "one hundred nine billion, one hundred seventy-three million, nine hundred ninety thousand, fifty-one".