5521649538944 has 128 divisors (see below), whose sum is σ = 13827832531200. Its totient is φ = 2151291563520.

The previous prime is 5521649538883. The next prime is 5521649538997. The reversal of 5521649538944 is 4498359461255.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×5521649538944² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1122434 + ... + 3507585.

It is an arithmetic number, because the mean of its divisors is an integer number (108029941650).

Almost surely, 2^{5521649538944} is an apocalyptic number.

It is an amenable number.

5521649538944 is an abundant number, since it is smaller than the sum of its proper divisors (8306182992256).

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

5521649538944 is an equidigital number, since it uses as much as digits as its factorization.

5521649538944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630073 (or 4630039 counting only the distinct ones).

The product of its digits is 186624000, while the sum is 65.

The spelling of 5521649538944 in words is "five trillion, five hundred twenty-one billion, six hundred forty-nine million, five hundred thirty-eight thousand, nine hundred forty-four".