549011441459521 has 4 divisors (see below), whose sum is σ = 549842018527444. Its totient is φ = 548180864391600.

The previous prime is 549011441459497. The next prime is 549011441459543. The reversal of 549011441459521 is 125954144110945.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 238116964619521 + 310894476840000 = 15431039^2 + 17632200^2 .

It is a cyclic number.

It is not a de Polignac number, because 549011441459521 - 2⁵ = 549011441459489 is a prime.

It is a super-2 number, since 2×549011441459521² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549011441459321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415288532970 + ... + 415288534291.

It is an arithmetic number, because the mean of its divisors is an integer number (137460504631861).

Almost surely, 2^{549011441459521} is an apocalyptic number.

It is an amenable number.

549011441459521 is a deficient number, since it is larger than the sum of its proper divisors (830577067923).

549011441459521 is an equidigital number, since it uses as much as digits as its factorization.

549011441459521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830577067922.

The product of its (nonzero) digits is 5184000, while the sum is 55.

The spelling of 549011441459521 in words is "five hundred forty-nine trillion, eleven billion, four hundred forty-one million, four hundred fifty-nine thousand, five hundred twenty-one".