188445134672 has 30 divisors (see below), whose sum is σ = 377270229834. Its totient is φ = 91183122240.

The previous prime is 188445134671. The next prime is 188445134693. The reversal of 188445134672 is 276431544881.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 145768185616 + 42676949056 = 381796^2 + 206584^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188445134671) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 6112523 + ... + 6143274.

Almost surely, 2^188445134672 is an apocalyptic number.

It is an amenable number.

188445134672 is an abundant number, since it is smaller than the sum of its proper divisors (188825095162).

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

188445134672 is a wasteful number, since it uses less digits than its factorization.

188445134672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12255867 (or 12255830 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 53.

The spelling of 188445134672 in words is "one hundred eighty-eight billion, four hundred forty-five million, one hundred thirty-four thousand, six hundred seventy-two".