55550500550020 has 96 divisors (see below), whose sum is σ = 133777298688768. Its totient is φ = 18980756600832.

The previous prime is 55550500549979. The next prime is 55550500550033. The reversal of 55550500550020 is 2005500505555.

55550500550020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55550500550020² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197356104 + ... + 197637376.

It is an arithmetic number, because the mean of its divisors is an integer number (1393513528008).

Almost surely, 2^{55550500550020} 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 55550500550020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66888649344384).

55550500550020 is an abundant number, since it is smaller than the sum of its proper divisors (78226798138748).

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

55550500550020 is a wasteful number, since it uses less digits than its factorization.

55550500550020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286109 (or 286107 counting only the distinct ones).

The product of its (nonzero) digits is 156250, while the sum is 37.

The spelling of 55550500550020 in words is "fifty-five trillion, five hundred fifty billion, five hundred million, five hundred fifty thousand, twenty".