545033626561 has 4 divisors (see below), whose sum is σ = 546494843092. Its totient is φ = 543572410032.

The previous prime is 545033626523. The next prime is 545033626583. The reversal of 545033626561 is 165626330545.

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 116049235600 + 428984390961 = 340660^2 + 654969^2 .

It is a cyclic number.

It is not a de Polignac number, because 545033626561 - 2⁷ = 545033626433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545033626591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730607706 + ... + 730608451.

It is an arithmetic number, because the mean of its divisors is an integer number (136623710773).

Almost surely, 2^545033626561 is an apocalyptic number.

It is an amenable number.

545033626561 is a deficient number, since it is larger than the sum of its proper divisors (1461216531).

545033626561 is a wasteful number, since it uses less digits than its factorization.

545033626561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461216530.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 545033626561 in words is "five hundred forty-five billion, thirty-three million, six hundred twenty-six thousand, five hundred sixty-one".