20303704809 has 32 divisors (see below), whose sum is σ = 31891898880. Its totient is φ = 12722400000.

The previous prime is 20303704801. The next prime is 20303704847. The reversal of 20303704809 is 90840730302.

20303704809 is a `hidden beast` number, since 203 + 0 + 370 + 4 + 80 + 9 = 666.

It is not a de Polignac number, because 20303704809 - 2³ = 20303704801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20303704801) 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 31 ways as a sum of consecutive naturals, for example, 315259 + ... + 374159.

It is an arithmetic number, because the mean of its divisors is an integer number (996621840).

Almost surely, 2^20303704809 is an apocalyptic number.

It is an amenable number.

20303704809 is a deficient number, since it is larger than the sum of its proper divisors (11588194071).

20303704809 is a wasteful number, since it uses less digits than its factorization.

20303704809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59678 (or 59672 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 20303704809 in words is "twenty billion, three hundred three million, seven hundred four thousand, eight hundred nine".