549235138816 has 243 divisors, whose sum is σ = 1383682591431. Its totient is φ = 216852959232.

The previous prime is 549235138801. The next prime is 549235138843. The reversal of 549235138816 is 618831532945.

The square root of 549235138816 is 741104.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1493049600 + 547742089216 = 38640^2 + 740096^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1079047170 + ... + 1079047678.

Almost surely, 2^549235138816 is an apocalyptic number.

549235138816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

549235138816 is the 741104-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549235138816

549235138816 is an abundant number, since it is smaller than the sum of its proper divisors (834447452615).

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

549235138816 is an frugal number, since it uses more digits than its factorization.

549235138816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 531 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 55.

The spelling of 549235138816 in words is "five hundred forty-nine billion, two hundred thirty-five million, one hundred thirty-eight thousand, eight hundred sixteen".