188780020056 has 192 divisors, whose sum is σ = 537983877600. Its totient is φ = 59720177664.

The previous prime is 188780020049. The next prime is 188780020189. The reversal of 188780020056 is 650020087881.

It is a junction number, because it is equal to n+sod(n) for n = 188780019993 and 188780020020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48316455 + ... + 48320361.

Almost surely, 2^188780020056 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 188780020056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268991938800).

188780020056 is an abundant number, since it is smaller than the sum of its proper divisors (349203857544).

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

188780020056 is a wasteful number, since it uses less digits than its factorization.

188780020056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338 (or 4331 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 188780020056 in words is "one hundred eighty-eight billion, seven hundred eighty million, twenty thousand, fifty-six".