5545555403220 has 384 divisors, whose sum is σ = 19971011128320. Its totient is φ = 1251326361600.

The previous prime is 5545555403189. The next prime is 5545555403249. The reversal of 5545555403220 is 223045555455.

5545555403220 is a `hidden beast` number, since 5 + 5 + 4 + 5 + 55 + 540 + 32 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 127 ways as a sum of consecutive naturals, for example, 147011802 + ... + 147049518.

It is an arithmetic number, because the mean of its divisors is an integer number (52007841480).

Almost surely, 2^{5545555403220} 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 5545555403220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9985505564160).

5545555403220 is an abundant number, since it is smaller than the sum of its proper divisors (14425455725100).

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

5545555403220 is a wasteful number, since it uses less digits than its factorization.

5545555403220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38240 (or 38232 counting only the distinct ones).

The product of its (nonzero) digits is 3000000, while the sum is 45.

The spelling of 5545555403220 in words is "five trillion, five hundred forty-five billion, five hundred fifty-five million, four hundred three thousand, two hundred twenty".