55560666521 has 8 divisors (see below), whose sum is σ = 55611256320. Its totient is φ = 55510104208.

The previous prime is 55560666461. The next prime is 55560666523. The reversal of 55560666521 is 12566606555.

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

It is a cyclic number.

It is not a de Polignac number, because 55560666521 - 2¹⁴ = 55560650137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55560666523) 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 7 ways as a sum of consecutive naturals, for example, 6436010 + ... + 6444636.

It is an arithmetic number, because the mean of its divisors is an integer number (6951407040).

Almost surely, 2^55560666521 is an apocalyptic number.

It is an amenable number.

55560666521 is a deficient number, since it is larger than the sum of its proper divisors (50589799).

55560666521 is a wasteful number, since it uses less digits than its factorization.

55560666521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13743.

The product of its (nonzero) digits is 1620000, while the sum is 47.

The spelling of 55560666521 in words is "fifty-five billion, five hundred sixty million, six hundred sixty-six thousand, five hundred twenty-one".