188888700040 has 16 divisors (see below), whose sum is σ = 424999575180. Its totient is φ = 75555480000.

The previous prime is 188888699981. The next prime is 188888700041. The reversal of 188888700040 is 40007888881.

It is a happy number.

188888700040 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 161734274244 + 27154425796 = 402162^2 + 164786^2 .

It is not an unprimeable number, because it can be changed into a prime (188888700041) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2361108711 + ... + 2361108790.

Almost surely, 2^188888700040 is an apocalyptic number.

188888700040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188888700040 is an abundant number, since it is smaller than the sum of its proper divisors (236110875140).

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

188888700040 is a wasteful number, since it uses less digits than its factorization.

188888700040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722217512 (or 4722217508 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 52.

The spelling of 188888700040 in words is "one hundred eighty-eight billion, eight hundred eighty-eight million, seven hundred thousand, forty".