550721204208 has 480 divisors, whose sum is σ = 1848156710400. Its totient is φ = 149772478464.

The previous prime is 550721204207. The next prime is 550721204221. The reversal of 550721204208 is 802402127055.

It is a happy number.

550721204208 is a `hidden beast` number, since 5 + 507 + 2 + 120 + 4 + 20 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550721204207) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 978190135 + ... + 978190697.

It is an arithmetic number, because the mean of its divisors is an integer number (3850326480).

Almost surely, 2^550721204208 is an apocalyptic number.

550721204208 is a gapful number since it is divisible by the number (58) 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 550721204208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924078355200).

550721204208 is an abundant number, since it is smaller than the sum of its proper divisors (1297435506192).

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

550721204208 is a wasteful number, since it uses less digits than its factorization.

550721204208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The spelling of 550721204208 in words is "five hundred fifty billion, seven hundred twenty-one million, two hundred four thousand, two hundred eight".