21963832804 has 9 divisors (see below), whose sum is σ = 38437226121. Its totient is φ = 10981768200.

The previous prime is 21963832801. The next prime is 21963832853. The reversal of 21963832804 is 40823836912.

The square root of 21963832804 is 148202.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9960439204 + 12003393600 = 99802^2 + 109560^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21963832801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 259354 + ... + 333454.

Almost surely, 2^21963832804 is an apocalyptic number.

21963832804 is the 148202-nd square number.

It is an amenable number.

21963832804 is a deficient number, since it is larger than the sum of its proper divisors (16473393317).

21963832804 is an frugal number, since it uses more digits than its factorization.

21963832804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148206 (or 74103 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 21963832804 in words is "twenty-one billion, nine hundred sixty-three million, eight hundred thirty-two thousand, eight hundred four".