5565406066556 has 36 divisors (see below), whose sum is σ = 11333906903088. Its totient is φ = 2384262393408.

The previous prime is 5565406066553. The next prime is 5565406066567. The reversal of 5565406066556 is 6556606045655.

It is a super-2 number, since 2×5565406066556² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5565406066495 and 5565406066504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565406066553) 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, 4912160 + ... + 5938023.

It is an arithmetic number, because the mean of its divisors is an integer number (314830747308).

Almost surely, 2^{5565406066556} is an apocalyptic number.

It is an amenable number.

5565406066556 is an abundant number, since it is smaller than the sum of its proper divisors (5768500836532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5565406066556 is a wasteful number, since it uses less digits than its factorization.

5565406066556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10852818 (or 10852809 counting only the distinct ones).

The product of its (nonzero) digits is 97200000, while the sum is 59.

The spelling of 5565406066556 in words is "five trillion, five hundred sixty-five billion, four hundred six million, sixty-six thousand, five hundred fifty-six".