549355696128 has 390 divisors, whose sum is σ = 1696714636452. Its totient is φ = 177108664320.

The previous prime is 549355696081. The next prime is 549355696151. The reversal of 549355696128 is 821696553945.

549355696128 is a `hidden beast` number, since 5 + 4 + 9 + 3 + 5 + 5 + 6 + 9 + 612 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 318835875 + ... + 318837597.

Almost surely, 2^549355696128 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 549355696128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848357318226).

549355696128 is an abundant number, since it is smaller than the sum of its proper divisors (1147358940324).

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

549355696128 is an equidigital number, since it uses as much as digits as its factorization.

549355696128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821 (or 1759 counting only the distinct ones).

The product of its digits is 69984000, while the sum is 63.

The spelling of 549355696128 in words is "five hundred forty-nine billion, three hundred fifty-five million, six hundred ninety-six thousand, one hundred twenty-eight".