20304611035209 has 12 divisors (see below), whose sum is σ = 29396931063552. Its totient is φ = 13505000376600.

The previous prime is 20304611035171. The next prime is 20304611035211. The reversal of 20304611035209 is 90253011640302.

20304611035209 is a `hidden beast` number, since 2 + 0 + 3 + 0 + 4 + 611 + 0 + 35 + 2 + 0 + 9 = 666.

It is not a de Polignac number, because 20304611035209 - 2²⁸ = 20304342599753 is a prime.

It is a super-2 number, since 2×20304611035209² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20304611035279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2617244257 + ... + 2617252014.

It is an arithmetic number, because the mean of its divisors is an integer number (2449744255296).

Almost surely, 2^{20304611035209} is an apocalyptic number.

It is an amenable number.

20304611035209 is a deficient number, since it is larger than the sum of its proper divisors (9092320028343).

20304611035209 is a wasteful number, since it uses less digits than its factorization.

20304611035209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5234496708 (or 5234496705 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 20304611035209 in words is "twenty trillion, three hundred four billion, six hundred eleven million, thirty-five thousand, two hundred nine".