20006662829 has 8 divisors (see below), whose sum is σ = 20551361400. Its totient is φ = 19462173696.

The previous prime is 20006662811. The next prime is 20006662849. The reversal of 20006662829 is 92826660002.

It can be written as a sum of positive squares in 4 ways, for example, as 41538025 + 19965124804 = 6445^2 + 141298^2 .

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 20006662829 - 2²⁰ = 20005614253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006662849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151997 + ... + 251229.

It is an arithmetic number, because the mean of its divisors is an integer number (2568920175).

Almost surely, 2^20006662829 is an apocalyptic number.

It is an amenable number.

20006662829 is a deficient number, since it is larger than the sum of its proper divisors (544698571).

20006662829 is an equidigital number, since it uses as much as digits as its factorization.

20006662829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104719.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 20006662829 in words is "twenty billion, six million, six hundred sixty-two thousand, eight hundred twenty-nine".