551111930800 has 120 divisors (see below), whose sum is σ = 1333051549776. Its totient is φ = 218950533120.

The previous prime is 551111930791. The next prime is 551111930821. The reversal of 551111930800 is 8039111155.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36280807 + ... + 36295993.

Almost surely, 2^551111930800 is an apocalyptic number.

551111930800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551111930800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666525774888).

551111930800 is an abundant number, since it is smaller than the sum of its proper divisors (781939618976).

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

551111930800 is a wasteful number, since it uses less digits than its factorization.

551111930800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15815 (or 15804 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 34.

The spelling of 551111930800 in words is "five hundred fifty-one billion, one hundred eleven million, nine hundred thirty thousand, eight hundred".