20566246108 has 12 divisors (see below), whose sum is σ = 36026466840. Its totient is φ = 10272969872.

The previous prime is 20566246079. The next prime is 20566246109. The reversal of 20566246108 is 80164266502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20566246109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2533738 + ... + 2541841.

It is an arithmetic number, because the mean of its divisors is an integer number (3002205570).

Almost surely, 2^20566246108 is an apocalyptic number.

It is an amenable number.

20566246108 is a deficient number, since it is larger than the sum of its proper divisors (15460220732).

20566246108 is a wasteful number, since it uses less digits than its factorization.

20566246108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076596 (or 5076594 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 20566246108 in words is "twenty billion, five hundred sixty-six million, two hundred forty-six thousand, one hundred eight".