551200173720000 has 560 divisors, whose sum is σ = 2085901276926720. Its totient is φ = 125797303296000.

The previous prime is 551200173719891. The next prime is 551200173720067. The reversal of 551200173720000 is 27371002155.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (560).

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 79 ways as a sum of consecutive naturals, for example, 553062132 + ... + 554057868.

Almost surely, 2^{551200173720000} is an apocalyptic number.

551200173720000 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 551200173720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042950638463360).

551200173720000 is an abundant number, since it is smaller than the sum of its proper divisors (1534701103206720).

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

551200173720000 is an equidigital number, since it uses as much as digits as its factorization.

551200173720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996438 (or 996413 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The spelling of 551200173720000 in words is "five hundred fifty-one trillion, two hundred billion, one hundred seventy-three million, seven hundred twenty thousand".