550286161920 has 720 divisors, whose sum is σ = 2168401074840. Its totient is φ = 133378375680.

The previous prime is 550286161913. The next prime is 550286161981. The reversal of 550286161920 is 29161682055.

550286161920 is a `hidden beast` number, since 5 + 5 + 0 + 2 + 8 + 6 + 1 + 619 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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 polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 100359499 + ... + 100364981.

Almost surely, 2^550286161920 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 550286161920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1084200537420).

550286161920 is an abundant number, since it is smaller than the sum of its proper divisors (1618114912920).

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

550286161920 is a wasteful number, since it uses less digits than its factorization.

550286161920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544 (or 5504 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 550286161920 in words is "five hundred fifty billion, two hundred eighty-six million, one hundred sixty-one thousand, nine hundred twenty".