550540609920 has 1024 divisors, whose sum is σ = 2390031360000. Its totient is φ = 116901937152.

The previous prime is 550540609909. The next prime is 550540609933. The reversal of 550540609920 is 29906045055.

It is a happy number.

550540609920 is a `hidden beast` number, since 550 + 5 + 4 + 0 + 6 + 0 + 9 + 92 + 0 = 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 (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 162447586 + ... + 162450974.

It is an arithmetic number, because the mean of its divisors is an integer number (2334015000).

Almost surely, 2^550540609920 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 550540609920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195015680000).

550540609920 is an abundant number, since it is smaller than the sum of its proper divisors (1839490750080).

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

550540609920 is a wasteful number, since it uses less digits than its factorization.

550540609920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520 (or 3502 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 550540609920 in words is "five hundred fifty billion, five hundred forty million, six hundred nine thousand, nine hundred twenty".