20608318080 has 1280 divisors, whose sum is σ = 91824480000. Its totient is φ = 4389396480.

The previous prime is 20608318069. The next prime is 20608318097. The reversal of 20608318080 is 8081380602.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 337841250 + ... + 337841310.

It is an arithmetic number, because the mean of its divisors is an integer number (71737875).

Almost surely, 2^20608318080 is an apocalyptic number.

20608318080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20608318080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45912240000).

20608318080 is an abundant number, since it is smaller than the sum of its proper divisors (71216161920).

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

20608318080 is an equidigital number, since it uses as much as digits as its factorization.

20608318080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

Adding to 20608318080 its reverse (8081380602), we get a palindrome (28689698682).

The spelling of 20608318080 in words is "twenty billion, six hundred eight million, three hundred eighteen thousand, eighty".