10066556616605 has 64 divisors (see below), whose sum is σ = 13501910822400. Its totient is φ = 7169586462720.

The previous prime is 10066556616601. The next prime is 10066556616607. The reversal of 10066556616605 is 50661665566001.

It is a happy number.

It is not a de Polignac number, because 10066556616605 - 2² = 10066556616601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10066556616601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114181181 + ... + 114269309.

It is an arithmetic number, because the mean of its divisors is an integer number (210967356600).

Almost surely, 2^{10066556616605} is an apocalyptic number.

It is an amenable number.

10066556616605 is a deficient number, since it is larger than the sum of its proper divisors (3435354205795).

10066556616605 is a wasteful number, since it uses less digits than its factorization.

10066556616605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89094.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 10066556616605 in words is "ten trillion, sixty-six billion, five hundred fifty-six million, six hundred sixteen thousand, six hundred five".