55055050020 has 144 divisors (see below), whose sum is σ = 168880420800. Its totient is φ = 14516967168.

The previous prime is 55055050013. The next prime is 55055050049. The reversal of 55055050020 is 2005055055.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6083619 + ... + 6092661.

It is an arithmetic number, because the mean of its divisors is an integer number (1172780700).

Almost surely, 2^55055050020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55055050020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84440210400).

55055050020 is an abundant number, since it is smaller than the sum of its proper divisors (113825370780).

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

55055050020 is a wasteful number, since it uses less digits than its factorization.

55055050020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9434 (or 9429 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 27.

The spelling of 55055050020 in words is "fifty-five billion, fifty-five million, fifty thousand, twenty".