550216166400 has 1584 divisors, whose sum is σ = 2206882163200. Its totient is φ = 130427781120.

The previous prime is 550216166359. The next prime is 550216166411. The reversal of 550216166400 is 4661612055.

550216166400 is a `hidden beast` number, since 5 + 5 + 0 + 2 + 1 + 6 + 1 + 6 + 640 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6964761561 + ... + 6964761639.

Almost surely, 2^550216166400 is an apocalyptic number.

550216166400 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 550216166400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1103441081600).

550216166400 is an abundant number, since it is smaller than the sum of its proper divisors (1656665996800).

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

550216166400 is a wasteful number, since it uses less digits than its factorization.

550216166400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 550216166400 its reverse (4661612055), we get a palindrome (554877778455).

The spelling of 550216166400 in words is "five hundred fifty billion, two hundred sixteen million, one hundred sixty-six thousand, four hundred".