20996244324 has 144 divisors (see below), whose sum is σ = 62365814784. Its totient is φ = 5889470400.

The previous prime is 20996244323. The next prime is 20996244343. The reversal of 20996244324 is 42344269902.

20996244324 is a `hidden beast` number, since 209 + 9 + 6 + 2 + 4 + 432 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20996244324.

It is not an unprimeable number, because it can be changed into a prime (20996244323) 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 47 ways as a sum of consecutive naturals, for example, 245167 + ... + 319529.

It is an arithmetic number, because the mean of its divisors is an integer number (433095936).

Almost surely, 2^20996244324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20996244324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31182907392).

20996244324 is an abundant number, since it is smaller than the sum of its proper divisors (41369570460).

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

20996244324 is a wasteful number, since it uses less digits than its factorization.

20996244324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74438 (or 74433 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 20996244324 in words is "twenty billion, nine hundred ninety-six million, two hundred forty-four thousand, three hundred twenty-four".