546456544721 has 2 divisors, whose sum is σ = 546456544722. Its totient is φ = 546456544720.

The previous prime is 546456544703. The next prime is 546456544759. The reversal of 546456544721 is 127445654645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507458194321 + 38998350400 = 712361^2 + 197480^2 .

It is a cyclic number.

It is not a de Polignac number, because 546456544721 - 2²² = 546452350417 is a prime.

It is a super-2 number, since 2×546456544721² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (546456546721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273228272360 + 273228272361.

It is an arithmetic number, because the mean of its divisors is an integer number (273228272361).

Almost surely, 2^546456544721 is an apocalyptic number.

It is an amenable number.

546456544721 is a deficient number, since it is larger than the sum of its proper divisors (1).

546456544721 is an equidigital number, since it uses as much as digits as its factorization.

546456544721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128000, while the sum is 53.

The spelling of 546456544721 in words is "five hundred forty-six billion, four hundred fifty-six million, five hundred forty-four thousand, seven hundred twenty-one".