55505605600 has 144 divisors (see below), whose sum is σ = 146271575520. Its totient is φ = 20504422400.

The previous prime is 55505605567. The next prime is 55505605601. The reversal of 55505605600 is 650650555.

It is a self number, because there is not a number n which added to its sum of digits gives 55505605600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505605601) 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 23 ways as a sum of consecutive naturals, for example, 481590 + ... + 585610.

It is an arithmetic number, because the mean of its divisors is an integer number (1015774830).

Almost surely, 2^55505605600 is an apocalyptic number.

55505605600 is a gapful number since it is divisible by the number (50) 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 55505605600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73135787760).

55505605600 is an abundant number, since it is smaller than the sum of its proper divisors (90765969920).

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

55505605600 is a wasteful number, since it uses less digits than its factorization.

55505605600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104093 (or 104080 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 37.

The spelling of 55505605600 in words is "fifty-five billion, five hundred five million, six hundred five thousand, six hundred".