20820882748 has 12 divisors (see below), whose sum is σ = 36980374312. Its totient is φ = 10255061520.

The previous prime is 20820882743. The next prime is 20820882853. The reversal of 20820882748 is 84728802802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20820882743) 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, 38844663 + ... + 38845198.

Almost surely, 2^20820882748 is an apocalyptic number.

It is an amenable number.

20820882748 is a deficient number, since it is larger than the sum of its proper divisors (16159491564).

20820882748 is a wasteful number, since it uses less digits than its factorization.

20820882748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77689932 (or 77689930 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 49.

The spelling of 20820882748 in words is "twenty billion, eight hundred twenty million, eight hundred eighty-two thousand, seven hundred forty-eight".