188448222500 has 120 divisors (see below), whose sum is σ = 439738363680. Its totient is φ = 70432416000.

The previous prime is 188448222499. The next prime is 188448222569. The reversal of 188448222500 is 5222844881.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3440327 + ... + 3494673.

It is an arithmetic number, because the mean of its divisors is an integer number (3664486364).

Almost surely, 2^188448222500 is an apocalyptic number.

188448222500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188448222500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219869181840).

188448222500 is an abundant number, since it is smaller than the sum of its proper divisors (251290141180).

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

188448222500 is a wasteful number, since it uses less digits than its factorization.

188448222500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54463 (or 54446 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 44.

The spelling of 188448222500 in words is "one hundred eighty-eight billion, four hundred forty-eight million, two hundred twenty-two thousand, five hundred".