544163997889 has 2 divisors, whose sum is σ = 544163997890.
Its totient is φ = 544163997888.
The previous prime is 544163997869. The next prime is 544163997899. The reversal of 544163997889 is 988799361445.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 387500025025 + 156663972864 = 622495^2 + 395808^2
It is a cyclic number.
It is not a de Polignac number, because 544163997889 - 27 = 544163997761 is a prime.
It is a super-2 number, since 2×5441639978892 (a number of 24 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (544163997869) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272081998944 + 272081998945.
It is an arithmetic number, because the mean of its divisors is an integer number (272081998945).
Almost surely, 2544163997889 is an apocalyptic number.
It is an amenable number.
544163997889 is a deficient number, since it is larger than the sum of its proper divisors (1).
544163997889 is an equidigital number, since it uses as much as digits as its factorization.
544163997889 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 470292480, while the sum is 73.
The spelling of 544163997889 in words is "five hundred forty-four billion, one hundred sixty-three million, nine hundred ninety-seven thousand, eight hundred eighty-nine".