544163997761 has 2 divisors, whose sum is σ = 544163997762. Its totient is φ = 544163997760.

The previous prime is 544163997739. The next prime is 544163997763. The reversal of 544163997761 is 167799361445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423077397136 + 121086600625 = 650444^2 + 347975^2 .

It is a cyclic number.

It is not a de Polignac number, because 544163997761 - 2³⁰ = 543090255937 is a prime.

It is a super-2 number, since 2×544163997761² (a number of 24 digits) contains 22 as substring.

Together with 544163997763, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 544163997694 and 544163997703.

It is not a weakly prime, because it can be changed into another prime (544163997763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272081998880 + 272081998881.

It is an arithmetic number, because the mean of its divisors is an integer number (272081998881).

Almost surely, 2^544163997761 is an apocalyptic number.

It is an amenable number.

544163997761 is a deficient number, since it is larger than the sum of its proper divisors (1).

544163997761 is an equidigital number, since it uses as much as digits as its factorization.

544163997761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34292160, while the sum is 62.

The spelling of 544163997761 in words is "five hundred forty-four billion, one hundred sixty-three million, nine hundred ninety-seven thousand, seven hundred sixty-one".