109045545173 has 4 divisors (see below), whose sum is σ = 111581488128. Its totient is φ = 106509602220.

The previous prime is 109045545137. The next prime is 109045545181. The reversal of 109045545173 is 371545540901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 109045545173 - 2⁶ = 109045545109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109045545113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267971413 + ... + 1267971498.

It is an arithmetic number, because the mean of its divisors is an integer number (27895372032).

Almost surely, 2^109045545173 is an apocalyptic number.

It is an amenable number.

109045545173 is a deficient number, since it is larger than the sum of its proper divisors (2535942955).

109045545173 is an equidigital number, since it uses as much as digits as its factorization.

109045545173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535942954.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 109045545173 in words is "one hundred nine billion, forty-five million, five hundred forty-five thousand, one hundred seventy-three".