546821041549 has 2 divisors, whose sum is σ = 546821041550. Its totient is φ = 546821041548.

The previous prime is 546821041519. The next prime is 546821041577. The reversal of 546821041549 is 945140128645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429165181449 + 117655860100 = 655107^2 + 343010^2 .

It is a cyclic number.

It is not a de Polignac number, because 546821041549 - 2⁹ = 546821041037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (546821041519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273410520774 + 273410520775.

It is an arithmetic number, because the mean of its divisors is an integer number (273410520775).

Almost surely, 2^546821041549 is an apocalyptic number.

It is an amenable number.

546821041549 is a deficient number, since it is larger than the sum of its proper divisors (1).

546821041549 is an equidigital number, since it uses as much as digits as its factorization.

546821041549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 546821041549 in words is "five hundred forty-six billion, eight hundred twenty-one million, forty-one thousand, five hundred forty-nine".