5551550205520 has 80 divisors (see below), whose sum is σ = 14319406981440. Its totient is φ = 1984529484800.

The previous prime is 5551550205479. The next prime is 5551550205581. The reversal of 5551550205520 is 255020551555.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53410621 + ... + 53514460.

It is an arithmetic number, because the mean of its divisors is an integer number (178992587268).

Almost surely, 2^{5551550205520} is an apocalyptic number.

It is an amenable number.

5551550205520 is an abundant number, since it is smaller than the sum of its proper divisors (8767856775920).

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

5551550205520 is a wasteful number, since it uses less digits than its factorization.

5551550205520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106925164 (or 106925158 counting only the distinct ones).

The product of its (nonzero) digits is 312500, while the sum is 40.

The spelling of 5551550205520 in words is "five trillion, five hundred fifty-one billion, five hundred fifty million, two hundred five thousand, five hundred twenty".