20104173329 has 4 divisors (see below), whose sum is σ = 20119603776. Its totient is φ = 20088742884.

The previous prime is 20104173319. The next prime is 20104173337. The reversal of 20104173329 is 92337140102.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92337140102 = 2 ⋅46168570051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20104173329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20104173295 and 20104173304.

It is not an unprimeable number, because it can be changed into a prime (20104173319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7713269 + ... + 7715874.

It is an arithmetic number, because the mean of its divisors is an integer number (5029900944).

Almost surely, 2^20104173329 is an apocalyptic number.

It is an amenable number.

20104173329 is a deficient number, since it is larger than the sum of its proper divisors (15430447).

20104173329 is a wasteful number, since it uses less digits than its factorization.

20104173329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15430446.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 20104173329 in words is "twenty billion, one hundred four million, one hundred seventy-three thousand, three hundred twenty-nine".