20005543204 has 12 divisors (see below), whose sum is σ = 35070380044. Its totient is φ = 9985434624.

The previous prime is 20005543189. The next prime is 20005543219. The reversal of 20005543204 is 40234550002.

It is an interprime number because it is at equal distance from previous prime (20005543189) and next prime (20005543219).

It can be written as a sum of positive squares in 2 ways, for example, as 19656600804 + 348942400 = 140202^2 + 18680^2 .

It is a super-2 number, since 2×20005543204² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4331649 + ... + 4336264.

Almost surely, 2^20005543204 is an apocalyptic number.

It is an amenable number.

20005543204 is a deficient number, since it is larger than the sum of its proper divisors (15064836840).

20005543204 is a wasteful number, since it uses less digits than its factorization.

20005543204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8668494 (or 8668492 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 20005543204 in words is "twenty billion, five million, five hundred forty-three thousand, two hundred four".