20443883436 has 24 divisors (see below), whose sum is σ = 53002661040. Its totient is φ = 6814627776.

The previous prime is 20443883429. The next prime is 20443883459. The reversal of 20443883436 is 63438834402.

20443883436 is a `hidden beast` number, since 204 + 4 + 3 + 8 + 8 + 3 + 436 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20443883391 and 20443883400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94647501 + ... + 94647716.

It is an arithmetic number, because the mean of its divisors is an integer number (2208444210).

Almost surely, 2^20443883436 is an apocalyptic number.

It is an amenable number.

20443883436 is an abundant number, since it is smaller than the sum of its proper divisors (32558777604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20443883436 is a wasteful number, since it uses less digits than its factorization.

20443883436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189295230 (or 189295222 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 45.

The spelling of 20443883436 in words is "twenty billion, four hundred forty-three million, eight hundred eighty-three thousand, four hundred thirty-six".