55200047688 has 24 divisors (see below), whose sum is σ = 149500129350. Its totient is φ = 18400015872.

The previous prime is 55200047687. The next prime is 55200047743. The reversal of 55200047688 is 88674000255.

55200047688 is a `hidden beast` number, since 5 + 520 + 0 + 0 + 47 + 6 + 88 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55197743364 + 2304324 = 234942^2 + 1518^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (55200047687) 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, 383333593 + ... + 383333736.

Almost surely, 2^55200047688 is an apocalyptic number.

It is an amenable number.

55200047688 is an abundant number, since it is smaller than the sum of its proper divisors (94300081662).

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

55200047688 is a wasteful number, since it uses less digits than its factorization.

55200047688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766667341 (or 766667334 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 55200047688 in words is "fifty-five billion, two hundred million, forty-seven thousand, six hundred eighty-eight".