5566605511521 has 8 divisors (see below), whose sum is σ = 7423219038880. Its totient is φ = 3710531162592.

The previous prime is 5566605511499. The next prime is 5566605511543. The reversal of 5566605511521 is 1251155066655.

It is an interprime number because it is at equal distance from previous prime (5566605511499) and next prime (5566605511543).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5566605511521 - 2¹¹ = 5566605509473 is a prime.

It is a super-3 number, since 3×5566605511521³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5566605511321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134770516 + ... + 134811813.

It is an arithmetic number, because the mean of its divisors is an integer number (927902379860).

Almost surely, 2^{5566605511521} is an apocalyptic number.

It is an amenable number.

5566605511521 is a deficient number, since it is larger than the sum of its proper divisors (1856613527359).

5566605511521 is a wasteful number, since it uses less digits than its factorization.

5566605511521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269589215.

The product of its (nonzero) digits is 1350000, while the sum is 48.

The spelling of 5566605511521 in words is "five trillion, five hundred sixty-six billion, six hundred five million, five hundred eleven thousand, five hundred twenty-one".