2111516215066 has 16 divisors (see below), whose sum is σ = 3184262902080. Its totient is φ = 1050109787680.

The previous prime is 2111516215033. The next prime is 2111516215069. The reversal of 2111516215066 is 6605126151112.

It is not an unprimeable number, because it can be changed into a prime (2111516215069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3344131 + ... + 3925078.

It is an arithmetic number, because the mean of its divisors is an integer number (199016431380).

Almost surely, 2^{2111516215066} is an apocalyptic number.

2111516215066 is a deficient number, since it is larger than the sum of its proper divisors (1072746687014).

2111516215066 is a wasteful number, since it uses less digits than its factorization.

2111516215066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7269989.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 2111516215066 in words is "two trillion, one hundred eleven billion, five hundred sixteen million, two hundred fifteen thousand, sixty-six".