20803285684 has 6 divisors (see below), whose sum is σ = 36405749954. Its totient is φ = 10401642840.

The previous prime is 20803285669. The next prime is 20803285697. The reversal of 20803285684 is 48658230802.

It can be written as a sum of positive squares in only one way, i.e., 19357156900 + 1446128784 = 139130^2 + 38028^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600410707 + ... + 2600410714.

Almost surely, 2^20803285684 is an apocalyptic number.

It is an amenable number.

20803285684 is a deficient number, since it is larger than the sum of its proper divisors (15602464270).

20803285684 is a wasteful number, since it uses less digits than its factorization.

20803285684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200821425 (or 5200821423 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 20803285684 in words is "twenty billion, eight hundred three million, two hundred eighty-five thousand, six hundred eighty-four".