20484171709 has 8 divisors (see below), whose sum is σ = 22056736320. Its totient is φ = 18952453056.

The previous prime is 20484171707. The next prime is 20484171733. The reversal of 20484171709 is 90717148402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20484171709 - 2¹ = 20484171707 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 (20484171707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10210449 + ... + 10212454.

It is an arithmetic number, because the mean of its divisors is an integer number (2757092040).

Almost surely, 2^20484171709 is an apocalyptic number.

It is an amenable number.

20484171709 is a deficient number, since it is larger than the sum of its proper divisors (1572564611).

20484171709 is a wasteful number, since it uses less digits than its factorization.

20484171709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20422979.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 20484171709 in words is "twenty billion, four hundred eighty-four million, one hundred seventy-one thousand, seven hundred nine".