20845448176 has 80 divisors (see below), whose sum is σ = 47069987328. Its totient is φ = 8758944000.

The previous prime is 20845448147. The next prime is 20845448189. The reversal of 20845448176 is 67184454802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1156191 + ... + 1174081.

Almost surely, 2^20845448176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20845448176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23534993664).

20845448176 is an abundant number, since it is smaller than the sum of its proper divisors (26224539152).

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

20845448176 is a wasteful number, since it uses less digits than its factorization.

20845448176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18110 (or 18104 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 49.

The spelling of 20845448176 in words is "twenty billion, eight hundred forty-five million, four hundred forty-eight thousand, one hundred seventy-six".