549865044122688 has 336 divisors, whose sum is σ = 1869441325839360. Its totient is φ = 156979474205184.

The previous prime is 549865044122659. The next prime is 549865044122707. The reversal of 549865044122688 is 886221440568945.

549865044122688 is a `hidden beast` number, since 5 + 4 + 9 + 8 + 6 + 504 + 4 + 12 + 26 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 135053845 + ... + 139065707.

It is an arithmetic number, because the mean of its divisors is an integer number (5563813469760).

Almost surely, 2^{549865044122688} 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 549865044122688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (934720662919680).

549865044122688 is an abundant number, since it is smaller than the sum of its proper divisors (1319576281716672).

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

549865044122688 is a wasteful number, since it uses less digits than its factorization.

549865044122688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013156 (or 4013134 counting only the distinct ones).

The product of its (nonzero) digits is 1061683200, while the sum is 72.

The spelling of 549865044122688 in words is "five hundred forty-nine trillion, eight hundred sixty-five billion, forty-four million, one hundred twenty-two thousand, six hundred eighty-eight".