20055074816 has 96 divisors (see below), whose sum is σ = 47410272000. Its totient is φ = 8298479616.

The previous prime is 20055074789. The next prime is 20055074821. The reversal of 20055074816 is 61847055002.

It is a self number, because there is not a number n which added to its sum of digits gives 20055074816.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391625 + ... + 439863.

It is an arithmetic number, because the mean of its divisors is an integer number (493857000).

Almost surely, 2^20055074816 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 20055074816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23705136000).

20055074816 is an abundant number, since it is smaller than the sum of its proper divisors (27355197184).

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

20055074816 is an equidigital number, since it uses as much as digits as its factorization.

20055074816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48297 (or 48277 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 20055074816 in words is "twenty billion, fifty-five million, seventy-four thousand, eight hundred sixteen".