104634781729 has 3 divisors (see below), whose sum is σ = 104635105203. Its totient is φ = 104634458256.

The previous prime is 104634781721. The next prime is 104634781753. The reversal of 104634781729 is 927187436401.

It is a happy number.

The square root of 104634781729 is 323473.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 927187436401 = 14627 ⋅63388763.

It can be written as a sum of positive squares in only one way, i.e., 81758824225 + 22875957504 = 285935^2 + 151248^2 .

It is not a de Polignac number, because 104634781729 - 2³ = 104634781721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104634781721) 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 2 ways as a sum of consecutive naturals, for example, 161737 + ... + 485209.

It is an arithmetic number, because the mean of its divisors is an integer number (34878368401).

Almost surely, 2^104634781729 is an apocalyptic number.

104634781729 is the 323473-rd square number.

104634781729 is the 161737-th centered octagonal number.

It is an amenable number.

104634781729 is a deficient number, since it is larger than the sum of its proper divisors (323474).

104634781729 is an frugal number, since it uses more digits than its factorization.

104634781729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646946 (or 323473 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 104634781729 in words is "one hundred four billion, six hundred thirty-four million, seven hundred eighty-one thousand, seven hundred twenty-nine".