3545675426561 has 4 divisors (see below), whose sum is σ = 3582228781572. Its totient is φ = 3509122071552.

The previous prime is 3545675426479. The next prime is 3545675426581. The reversal of 3545675426561 is 1656245765453.

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 1331623681600 + 2214051744961 = 1153960^2 + 1487969^2 .

It is a cyclic number.

It is not a de Polignac number, because 3545675426561 - 2¹⁴ = 3545675410177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3545675426561.

It is not an unprimeable number, because it can be changed into a prime (3545675426581) 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, 18276677360 + ... + 18276677553.

It is an arithmetic number, because the mean of its divisors is an integer number (895557195393).

Almost surely, 2^{3545675426561} is an apocalyptic number.

It is an amenable number.

3545675426561 is a deficient number, since it is larger than the sum of its proper divisors (36553355011).

3545675426561 is an equidigital number, since it uses as much as digits as its factorization.

3545675426561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36553355010.

The product of its digits is 90720000, while the sum is 59.

The spelling of 3545675426561 in words is "three trillion, five hundred forty-five billion, six hundred seventy-five million, four hundred twenty-six thousand, five hundred sixty-one".