20775488328 has 48 divisors (see below), whose sum is σ = 64305084480. Its totient is φ = 5935853664.

The previous prime is 20775488311. The next prime is 20775488329. The reversal of 20775488328 is 82388457702.

20775488328 is a `hidden beast` number, since 2 + 0 + 77 + 548 + 8 + 3 + 28 = 666.

It is not an unprimeable number, because it can be changed into a prime (20775488329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20610100 + ... + 20611107.

It is an arithmetic number, because the mean of its divisors is an integer number (1339689260).

Almost surely, 2^20775488328 is an apocalyptic number.

20775488328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20775488328 is an abundant number, since it is smaller than the sum of its proper divisors (43529596152).

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

20775488328 is a wasteful number, since it uses less digits than its factorization.

20775488328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41221226 (or 41221219 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 54.

The spelling of 20775488328 in words is "twenty billion, seven hundred seventy-five million, four hundred eighty-eight thousand, three hundred twenty-eight".