55605616549 has 6 divisors (see below), whose sum is σ = 64684084614. Its totient is φ = 47661957000.

The previous prime is 55605616519. The next prime is 55605616597. The reversal of 55605616549 is 94561650655.

It can be written as a sum of positive squares in only one way, i.e., 55404685924 + 200930625 = 235382^2 + 14175^2 .

It is not a de Polignac number, because 55605616549 - 2⁹ = 55605616037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55605616496 and 55605616505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55605616519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567404202 + ... + 567404299.

It is an arithmetic number, because the mean of its divisors is an integer number (10780680769).

Almost surely, 2^55605616549 is an apocalyptic number.

It is an amenable number.

55605616549 is a deficient number, since it is larger than the sum of its proper divisors (9078468065).

55605616549 is a wasteful number, since it uses less digits than its factorization.

55605616549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134808515 (or 1134808508 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 55605616549 in words is "fifty-five billion, six hundred five million, six hundred sixteen thousand, five hundred forty-nine".