544550557997 has 2 divisors, whose sum is σ = 544550557998. Its totient is φ = 544550557996.

The previous prime is 544550557987. The next prime is 544550558009. The reversal of 544550557997 is 799755055445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379152988516 + 165397569481 = 615754^2 + 406691^2 .

It is a cyclic number.

It is not a de Polignac number, because 544550557997 - 2¹⁶ = 544550492461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544550557927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272275278998 + 272275278999.

It is an arithmetic number, because the mean of its divisors is an integer number (272275278999).

Almost surely, 2^544550557997 is an apocalyptic number.

It is an amenable number.

544550557997 is a deficient number, since it is larger than the sum of its proper divisors (1).

544550557997 is an equidigital number, since it uses as much as digits as its factorization.

544550557997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 198450000, while the sum is 65.

The spelling of 544550557997 in words is "five hundred forty-four billion, five hundred fifty million, five hundred fifty-seven thousand, nine hundred ninety-seven".