20042009999 has 8 divisors (see below), whose sum is σ = 21941822160. Its totient is φ = 18155166400.

The previous prime is 20042009969. The next prime is 20042010013. The reversal of 20042009999 is 99990024002.

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 20042009999 - 2¹⁶ = 20041944463 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 (20042009969) 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, 3238904 + ... + 3245085.

It is an arithmetic number, because the mean of its divisors is an integer number (2742727770).

Almost surely, 2^20042009999 is an apocalyptic number.

20042009999 is a deficient number, since it is larger than the sum of its proper divisors (1899812161).

20042009999 is a wasteful number, since it uses less digits than its factorization.

20042009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6484281.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 20042009999 in words is "twenty billion, forty-two million, nine thousand, nine hundred ninety-nine".