549785306664 has 192 divisors, whose sum is σ = 1651097448000. Its totient is φ = 163881999360.

The previous prime is 549785306659. The next prime is 549785306671. The reversal of 549785306664 is 466603587945.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11976684 + ... + 12022500.

It is an arithmetic number, because the mean of its divisors is an integer number (8599465875).

Almost surely, 2^549785306664 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 549785306664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825548724000).

549785306664 is an abundant number, since it is smaller than the sum of its proper divisors (1101312141336).

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

549785306664 is a wasteful number, since it uses less digits than its factorization.

549785306664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46088 (or 46081 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 63.

The spelling of 549785306664 in words is "five hundred forty-nine billion, seven hundred eighty-five million, three hundred six thousand, six hundred sixty-four".