544664987837 has 2 divisors, whose sum is σ = 544664987838. Its totient is φ = 544664987836.

The previous prime is 544664987813. The next prime is 544664987851. The reversal of 544664987837 is 738789466445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 516657626521 + 28007361316 = 718789^2 + 167354^2 .

It is a cyclic number.

It is not a de Polignac number, because 544664987837 - 2⁶ = 544664987773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544664987807) 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, 272332493918 + 272332493919.

It is an arithmetic number, because the mean of its divisors is an integer number (272332493919).

Almost surely, 2^544664987837 is an apocalyptic number.

It is an amenable number.

544664987837 is a deficient number, since it is larger than the sum of its proper divisors (1).

544664987837 is an equidigital number, since it uses as much as digits as its factorization.

544664987837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 975421440, while the sum is 71.

The spelling of 544664987837 in words is "five hundred forty-four billion, six hundred sixty-four million, nine hundred eighty-seven thousand, eight hundred thirty-seven".