20553388176 has 80 divisors (see below), whose sum is σ = 53493808320. Its totient is φ = 6799971840.

The previous prime is 20553388171. The next prime is 20553388243. The reversal of 20553388176 is 67188335502.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (20553388171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5885791 + ... + 5889281.

It is an arithmetic number, because the mean of its divisors is an integer number (668672604).

Almost surely, 2^20553388176 is an apocalyptic number.

It is an amenable number.

20553388176 is an abundant number, since it is smaller than the sum of its proper divisors (32940420144).

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

20553388176 is a wasteful number, since it uses less digits than its factorization.

20553388176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384 (or 4378 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 20553388176 in words is "twenty billion, five hundred fifty-three million, three hundred eighty-eight thousand, one hundred seventy-six".