544128544381 has 2 divisors, whose sum is σ = 544128544382. Its totient is φ = 544128544380.

The previous prime is 544128544357. The next prime is 544128544439. The reversal of 544128544381 is 183445821445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520699344025 + 23429200356 = 721595^2 + 153066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544128544381 is a prime.

It is a super-2 number, since 2×544128544381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544128541381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272064272190 + 272064272191.

It is an arithmetic number, because the mean of its divisors is an integer number (272064272191).

Almost surely, 2^544128544381 is an apocalyptic number.

It is an amenable number.

544128544381 is a deficient number, since it is larger than the sum of its proper divisors (1).

544128544381 is an equidigital number, since it uses as much as digits as its factorization.

544128544381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2457600, while the sum is 49.

The spelling of 544128544381 in words is "five hundred forty-four billion, one hundred twenty-eight million, five hundred forty-four thousand, three hundred eighty-one".