20004430640171 has 8 divisors (see below), whose sum is σ = 20095857264384. Its totient is φ = 19913120411560.

The previous prime is 20004430640167. The next prime is 20004430640179. The reversal of 20004430640171 is 17104603440002.

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 20004430640171 - 2² = 20004430640167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004430640179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28754375 + ... + 29441856.

It is an arithmetic number, because the mean of its divisors is an integer number (2511982158048).

Almost surely, 2^{20004430640171} is an apocalyptic number.

20004430640171 is a deficient number, since it is larger than the sum of its proper divisors (91426624213).

20004430640171 is a wasteful number, since it uses less digits than its factorization.

20004430640171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58197801.

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 20004430640171 in words is "twenty trillion, four billion, four hundred thirty million, six hundred forty thousand, one hundred seventy-one".