188905716550 has 12 divisors (see below), whose sum is σ = 351364632876. Its totient is φ = 75562286600.

The previous prime is 188905716547. The next prime is 188905716551. The reversal of 188905716550 is 55617509881.

It is a junction number, because it is equal to n+sod(n) for n = 188905716491 and 188905716500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188905716551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1889057116 + ... + 1889057215.

It is an arithmetic number, because the mean of its divisors is an integer number (29280386073).

Almost surely, 2^188905716550 is an apocalyptic number.

188905716550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188905716550 is a deficient number, since it is larger than the sum of its proper divisors (162458916326).

188905716550 is a wasteful number, since it uses less digits than its factorization.

188905716550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778114343 (or 3778114338 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 55.

The spelling of 188905716550 in words is "one hundred eighty-eight billion, nine hundred five million, seven hundred sixteen thousand, five hundred fifty".