5661106561564 has 12 divisors (see below), whose sum is σ = 9906953860888. Its totient is φ = 2830548315600.

The previous prime is 5661106561553. The next prime is 5661106561577. The reversal of 5661106561564 is 4651656011665.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2750119 + ... + 4345729.

Almost surely, 2^{5661106561564} is an apocalyptic number.

It is an amenable number.

5661106561564 is a deficient number, since it is larger than the sum of its proper divisors (4245847299324).

5661106561564 is a wasteful number, since it uses less digits than its factorization.

5661106561564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482596 (or 2482594 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 52.

The spelling of 5661106561564 in words is "five trillion, six hundred sixty-one billion, one hundred six million, five hundred sixty-one thousand, five hundred sixty-four".