544220510081 has 2 divisors, whose sum is σ = 544220510082. Its totient is φ = 544220510080.

The previous prime is 544220510069. The next prime is 544220510149. The reversal of 544220510081 is 180015022445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280110855025 + 264109655056 = 529255^2 + 513916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544220510081 is a prime.

It is a super-2 number, since 2×544220510081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (544220510011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272110255040 + 272110255041.

It is an arithmetic number, because the mean of its divisors is an integer number (272110255041).

Almost surely, 2^544220510081 is an apocalyptic number.

It is an amenable number.

544220510081 is a deficient number, since it is larger than the sum of its proper divisors (1).

544220510081 is an equidigital number, since it uses as much as digits as its factorization.

544220510081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12800, while the sum is 32.

The spelling of 544220510081 in words is "five hundred forty-four billion, two hundred twenty million, five hundred ten thousand, eighty-one".