549816318016 has 63 divisors (see below), whose sum is σ = 1269266881197. Its totient is φ = 235617768960.

The previous prime is 549816317989. The next prime is 549816318053. The reversal of 549816318016 is 610813618945.

The square root of 549816318016 is 741496.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 547162007616 + 2654310400 = 739704^2 + 51520^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 41517156 + ... + 41530396.

Almost surely, 2^549816318016 is an apocalyptic number.

549816318016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

549816318016 is the 741496-th square number.

It is an amenable number.

549816318016 is an abundant number, since it is smaller than the sum of its proper divisors (719450563181).

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

549816318016 is an frugal number, since it uses more digits than its factorization.

549816318016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26508 (or 13250 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 549816318016 in words is "five hundred forty-nine billion, eight hundred sixteen million, three hundred eighteen thousand, sixteen".