20021836364 has 12 divisors (see below), whose sum is σ = 35052608304. Its totient is φ = 10006805424.

The previous prime is 20021836327. The next prime is 20021836369. The reversal of 20021836364 is 46363812002.

It is not an unprimeable number, because it can be changed into a prime (20021836369) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1017224 + ... + 1036719.

It is an arithmetic number, because the mean of its divisors is an integer number (2921050692).

Almost surely, 2^20021836364 is an apocalyptic number.

It is an amenable number.

20021836364 is a deficient number, since it is larger than the sum of its proper divisors (15030771940).

20021836364 is a wasteful number, since it uses less digits than its factorization.

20021836364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056384 (or 2056382 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 20021836364 in words is "twenty billion, twenty-one million, eight hundred thirty-six thousand, three hundred sixty-four".