54545909549 has 16 divisors (see below), whose sum is σ = 56204252160. Its totient is φ = 52910392320.

The previous prime is 54545909507. The next prime is 54545909569. The reversal of 54545909549 is 94590954545.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 54545909549 - 2³² = 50250942253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54545909569) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2447147 + ... + 2469335.

It is an arithmetic number, because the mean of its divisors is an integer number (3512765760).

Almost surely, 2^54545909549 is an apocalyptic number.

It is an amenable number.

54545909549 is a deficient number, since it is larger than the sum of its proper divisors (1658342611).

54545909549 is a wasteful number, since it uses less digits than its factorization.

54545909549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22700.

The product of its (nonzero) digits is 29160000, while the sum is 59.

The spelling of 54545909549 in words is "fifty-four billion, five hundred forty-five million, nine hundred nine thousand, five hundred forty-nine".