2172015060066 has 48 divisors (see below), whose sum is σ = 4709557944000. Its totient is φ = 723462895584.

The previous prime is 2172015060053. The next prime is 2172015060077. The reversal of 2172015060066 is 6600605102712.

It is a happy number.

2172015060066 is a `hidden beast` number, since 2 + 17 + 20 + 15 + 0 + 600 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2172015060066.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 165808785 + ... + 165821883.

It is an arithmetic number, because the mean of its divisors is an integer number (98115790500).

Almost surely, 2^{2172015060066} is an apocalyptic number.

2172015060066 is an abundant number, since it is smaller than the sum of its proper divisors (2537542883934).

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

2172015060066 is a wasteful number, since it uses less digits than its factorization.

2172015060066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19303 (or 19300 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 2172015060066 in words is "two trillion, one hundred seventy-two billion, fifteen million, sixty thousand, sixty-six".