21967389796 has 27 divisors (see below), whose sum is σ = 42261727417. Its totient is φ = 9983695040.

The previous prime is 21967389779. The next prime is 21967389797. The reversal of 21967389796 is 69798376912.

The square root of 21967389796 is 148214.

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., 11221164900 + 10746224896 = 105930^2 + 103664^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21967389797) 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 8 ways as a sum of consecutive naturals, for example, 3257340 + ... + 3264076.

Almost surely, 2^21967389796 is an apocalyptic number.

21967389796 is the 148214-th square number.

It is an amenable number.

21967389796 is a deficient number, since it is larger than the sum of its proper divisors (20294337621).

21967389796 is an frugal number, since it uses more digits than its factorization.

21967389796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13500 (or 6750 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 67.

The spelling of 21967389796 in words is "twenty-one billion, nine hundred sixty-seven million, three hundred eighty-nine thousand, seven hundred ninety-six".