3645560561522 has 24 divisors (see below), whose sum is σ = 6054529090428. Its totient is φ = 1644977544320.

The previous prime is 3645560561509. The next prime is 3645560561527. The reversal of 3645560561522 is 2251650655463.

It can be written as a sum of positive squares in 2 ways, for example, as 3276320823721 + 369239737801 = 1810061^2 + 607651^2 .

It is a super-2 number, since 2×3645560561522² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3645560561527) 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 11 ways as a sum of consecutive naturals, for example, 54946043 + ... + 55012350.

Almost surely, 2^{3645560561522} is an apocalyptic number.

3645560561522 is a deficient number, since it is larger than the sum of its proper divisors (2408968528906).

3645560561522 is a wasteful number, since it uses less digits than its factorization.

3645560561522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109958554 (or 109958543 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 50.

The spelling of 3645560561522 in words is "three trillion, six hundred forty-five billion, five hundred sixty million, five hundred sixty-one thousand, five hundred twenty-two".