549473687698320 has 640 divisors, whose sum is σ = 2392879063080960. Its totient is φ = 112568230656000.

The previous prime is 549473687698303. The next prime is 549473687698333. The reversal of 549473687698320 is 23896786374945.

549473687698320 is a `hidden beast` number, since 5 + 4 + 9 + 473 + 6 + 8 + 7 + 69 + 83 + 2 + 0 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 549473687698320.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11456871 + ... + 35074310.

It is an arithmetic number, because the mean of its divisors is an integer number (3738873536064).

Almost surely, 2^{549473687698320} 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 549473687698320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1196439531540480).

549473687698320 is an abundant number, since it is smaller than the sum of its proper divisors (1843405375382640).

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

549473687698320 is a wasteful number, since it uses less digits than its factorization.

549473687698320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46531292 (or 46531280 counting only the distinct ones).

The product of its (nonzero) digits is 13168189440, while the sum is 81.

The spelling of 549473687698320 in words is "five hundred forty-nine trillion, four hundred seventy-three billion, six hundred eighty-seven million, six hundred ninety-eight thousand, three hundred twenty".