545512606215545 has 4 divisors (see below), whose sum is σ = 654615127458660. Its totient is φ = 436410084972432.

The previous prime is 545512606215541. The next prime is 545512606215547.

545512606215545 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193654694184169 + 351857912031376 = 13915987^2 + 18757876^2 .

It is a cyclic number.

It is not a de Polignac number, because 545512606215545 - 2² = 545512606215541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545512606215541) 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 in 3 ways as a sum of consecutive naturals, for example, 54551260621550 + ... + 54551260621559.

It is an arithmetic number, because the mean of its divisors is an integer number (163653781864665).

Almost surely, 2^{545512606215545} is an apocalyptic number.

It is an amenable number.

545512606215545 is a deficient number, since it is larger than the sum of its proper divisors (109102521243115).

545512606215545 is a wasteful number, since it uses less digits than its factorization.

545512606215545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109102521243114.

The product of its (nonzero) digits is 36000000, while the sum is 56.

The spelling of 545512606215545 in words is "five hundred forty-five trillion, five hundred twelve billion, six hundred six million, two hundred fifteen thousand, five hundred forty-five".