55344723509 has 2 divisors, whose sum is σ = 55344723510. Its totient is φ = 55344723508.

The previous prime is 55344723463. The next prime is 55344723517. The reversal of 55344723509 is 90532744355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54554944900 + 789778609 = 233570^2 + 28103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55344723509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55344723569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27672361754 + 27672361755.

It is an arithmetic number, because the mean of its divisors is an integer number (27672361755).

Almost surely, 2^55344723509 is an apocalyptic number.

It is an amenable number.

55344723509 is a deficient number, since it is larger than the sum of its proper divisors (1).

55344723509 is an equidigital number, since it uses as much as digits as its factorization.

55344723509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268000, while the sum is 47.

The spelling of 55344723509 in words is "fifty-five billion, three hundred forty-four million, seven hundred twenty-three thousand, five hundred nine".