20716801108 has 24 divisors (see below), whose sum is σ = 38018330280. Its totient is φ = 9864207360.

The previous prime is 20716801051. The next prime is 20716801123. The reversal of 20716801108 is 80110861702.

It can be written as a sum of positive squares in 4 ways, for example, as 6275491524 + 14441309584 = 79218^2 + 120172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214773 + ... + 1231708.

It is an arithmetic number, because the mean of its divisors is an integer number (1584097095).

Almost surely, 2^20716801108 is an apocalyptic number.

It is an amenable number.

20716801108 is a deficient number, since it is larger than the sum of its proper divisors (17301529172).

20716801108 is a wasteful number, since it uses less digits than its factorization.

20716801108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446587 (or 2446585 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 34.

The spelling of 20716801108 in words is "twenty billion, seven hundred sixteen million, eight hundred one thousand, one hundred eight".