546456546721 has 2 divisors, whose sum is σ = 546456546722. Its totient is φ = 546456546720.

The previous prime is 546456546707. The next prime is 546456546743. The reversal of 546456546721 is 127645654645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 485502368400 + 60954178321 = 696780^2 + 246889^2 .

It is a cyclic number.

It is not a de Polignac number, because 546456546721 - 2⁵ = 546456546689 is a prime.

It is a super-2 number, since 2×546456546721² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (546456546421) 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, 273228273360 + 273228273361.

It is an arithmetic number, because the mean of its divisors is an integer number (273228273361).

Almost surely, 2^546456546721 is an apocalyptic number.

It is an amenable number.

546456546721 is a deficient number, since it is larger than the sum of its proper divisors (1).

546456546721 is an equidigital number, since it uses as much as digits as its factorization.

546456546721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192000, while the sum is 55.

The spelling of 546456546721 in words is "five hundred forty-six billion, four hundred fifty-six million, five hundred forty-six thousand, seven hundred twenty-one".