545546464121 has 2 divisors, whose sum is σ = 545546464122. Its totient is φ = 545546464120.

The previous prime is 545546464097. The next prime is 545546464157. The reversal of 545546464121 is 121464645545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478879224121 + 66667240000 = 692011^2 + 258200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545546464121 is a prime.

It is a super-3 number, since 3×545546464121³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (545546467121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272773232060 + 272773232061.

It is an arithmetic number, because the mean of its divisors is an integer number (272773232061).

Almost surely, 2^545546464121 is an apocalyptic number.

It is an amenable number.

545546464121 is a deficient number, since it is larger than the sum of its proper divisors (1).

545546464121 is an equidigital number, since it uses as much as digits as its factorization.

545546464121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304000, while the sum is 47.

The spelling of 545546464121 in words is "five hundred forty-five billion, five hundred forty-six million, four hundred sixty-four thousand, one hundred twenty-one".