20468047209 has 16 divisors (see below), whose sum is σ = 28902722688. Its totient is φ = 12839738112.

The previous prime is 20468047207. The next prime is 20468047213. The reversal of 20468047209 is 90274086402.

It is not a de Polignac number, because 20468047209 - 2¹ = 20468047207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20468047207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188979 + ... + 276855.

It is an arithmetic number, because the mean of its divisors is an integer number (1806420168).

Almost surely, 2^20468047209 is an apocalyptic number.

It is an amenable number.

20468047209 is a deficient number, since it is larger than the sum of its proper divisors (8434675479).

20468047209 is a wasteful number, since it uses less digits than its factorization.

20468047209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92464.

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 20468047209 in words is "twenty billion, four hundred sixty-eight million, forty-seven thousand, two hundred nine".