104540221173 has 4 divisors (see below), whose sum is σ = 139386961568. Its totient is φ = 69693480780.

The previous prime is 104540221147. The next prime is 104540221187. The reversal of 104540221173 is 371122045401.

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 not a de Polignac number, because 104540221173 - 2²⁴ = 104523443957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104540221173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104540221103) 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, 17423370193 + ... + 17423370198.

It is an arithmetic number, because the mean of its divisors is an integer number (34846740392).

Almost surely, 2^104540221173 is an apocalyptic number.

It is an amenable number.

104540221173 is a deficient number, since it is larger than the sum of its proper divisors (34846740395).

104540221173 is an equidigital number, since it uses as much as digits as its factorization.

104540221173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34846740394.

The product of its (nonzero) digits is 6720, while the sum is 30.

Adding to 104540221173 its reverse (371122045401), we get a palindrome (475662266574).

The spelling of 104540221173 in words is "one hundred four billion, five hundred forty million, two hundred twenty-one thousand, one hundred seventy-three".