544666666493 has 2 divisors, whose sum is σ = 544666666494. Its totient is φ = 544666666492.

The previous prime is 544666666409. The next prime is 544666666517. The reversal of 544666666493 is 394666666445.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292635557764 + 252031108729 = 540958^2 + 502027^2 .

It is a cyclic number.

It is not a de Polignac number, because 544666666493 - 2²⁰ = 544665617917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544666666693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272333333246 + 272333333247.

It is an arithmetic number, because the mean of its divisors is an integer number (272333333247).

Almost surely, 2^544666666493 is an apocalyptic number.

It is an amenable number.

544666666493 is a deficient number, since it is larger than the sum of its proper divisors (1).

544666666493 is an equidigital number, since it uses as much as digits as its factorization.

544666666493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403107840, while the sum is 65.

The spelling of 544666666493 in words is "five hundred forty-four billion, six hundred sixty-six million, six hundred sixty-six thousand, four hundred ninety-three".