20808880000 has 80 divisors (see below), whose sum is σ = 51802605360. Its totient is φ = 8323520000.

The previous prime is 20808879997. The next prime is 20808880003. The reversal of 20808880000 is 8880802.

It is an interprime number because it is at equal distance from previous prime (20808879997) and next prime (20808880003).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20808880003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50056 + ... + 210055.

It is an arithmetic number, because the mean of its divisors is an integer number (647532567).

Almost surely, 2^20808880000 is an apocalyptic number.

20808880000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20808880000 is an abundant number, since it is smaller than the sum of its proper divisors (30993725360).

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

20808880000 is an frugal number, since it uses more digits than its factorization.

20808880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260145 (or 260118 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 34.

The spelling of 20808880000 in words is "twenty billion, eight hundred eight million, eight hundred eighty thousand".