104631844993 has 4 divisors (see below), whose sum is σ = 112680448468. Its totient is φ = 96583241520.

The previous prime is 104631844991. The next prime is 104631845027. The reversal of 104631844993 is 399448136401.

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 55663908624 + 48967936369 = 235932^2 + 221287^2 .

It is a cyclic number.

It is not a de Polignac number, because 104631844993 - 2¹ = 104631844991 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 104631844993.

It is not an unprimeable number, because it can be changed into a prime (104631844991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4024301718 + ... + 4024301743.

It is an arithmetic number, because the mean of its divisors is an integer number (28170112117).

Almost surely, 2^104631844993 is an apocalyptic number.

104631844993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

104631844993 is a deficient number, since it is larger than the sum of its proper divisors (8048603475).

104631844993 is an equidigital number, since it uses as much as digits as its factorization.

104631844993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8048603474.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 104631844993 in words is "one hundred four billion, six hundred thirty-one million, eight hundred forty-four thousand, nine hundred ninety-three".