20055520550 has 24 divisors (see below), whose sum is σ = 40172751696. Its totient is φ = 7405115040.

The previous prime is 20055520531. The next prime is 20055520601. The reversal of 20055520550 is 5502555002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15426674 + ... + 15427973.

It is an arithmetic number, because the mean of its divisors is an integer number (1673864654).

Almost surely, 2^20055520550 is an apocalyptic number.

20055520550 is an abundant number, since it is smaller than the sum of its proper divisors (20117231146).

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

20055520550 is a wasteful number, since it uses less digits than its factorization.

20055520550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30854672 (or 30854667 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

The spelling of 20055520550 in words is "twenty billion, fifty-five million, five hundred twenty thousand, five hundred fifty".