54244040509 has 2 divisors, whose sum is σ = 54244040510. Its totient is φ = 54244040508.

The previous prime is 54244040449. The next prime is 54244040527. The reversal of 54244040509 is 90504044245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29404704484 + 24839336025 = 171478^2 + 157605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54244040509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54244040549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27122020254 + 27122020255.

It is an arithmetic number, because the mean of its divisors is an integer number (27122020255).

Almost surely, 2^54244040509 is an apocalyptic number.

It is an amenable number.

54244040509 is a deficient number, since it is larger than the sum of its proper divisors (1).

54244040509 is an equidigital number, since it uses as much as digits as its factorization.

54244040509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 54244040509 in words is "fifty-four billion, two hundred forty-four million, forty thousand, five hundred nine".