104820869917 has 4 divisors (see below), whose sum is σ = 104872840636. Its totient is φ = 104768899200.

The previous prime is 104820869911. The next prime is 104820869963. The reversal of 104820869917 is 719968028401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87245799876 + 17575070041 = 295374^2 + 132571^2 .

It is a cyclic number.

It is not a de Polignac number, because 104820869917 - 2¹⁹ = 104820345629 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 (104820869911) 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, 25982334 + ... + 25986367.

It is an arithmetic number, because the mean of its divisors is an integer number (26218210159).

Almost surely, 2^104820869917 is an apocalyptic number.

It is an amenable number.

104820869917 is a deficient number, since it is larger than the sum of its proper divisors (51970719).

104820869917 is an equidigital number, since it uses as much as digits as its factorization.

104820869917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51970718.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 104820869917 in words is "one hundred four billion, eight hundred twenty million, eight hundred sixty-nine thousand, nine hundred seventeen".