16066506516666 has 32 divisors (see below), whose sum is σ = 32679639060480. Its totient is φ = 5264408938416.

The previous prime is 16066506516631. The next prime is 16066506516691. The reversal of 16066506516666 is 66661560566061.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4442485 + ... + 7201991.

It is an arithmetic number, because the mean of its divisors is an integer number (1021238720640).

Almost surely, 2^{16066506516666} is an apocalyptic number.

16066506516666 is an abundant number, since it is smaller than the sum of its proper divisors (16613132543814).

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

16066506516666 is a wasteful number, since it uses less digits than its factorization.

16066506516666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776018.

The product of its (nonzero) digits is 41990400, while the sum is 60.

The spelling of 16066506516666 in words is "sixteen trillion, sixty-six billion, five hundred six million, five hundred sixteen thousand, six hundred sixty-six".