16656166611 has 24 divisors (see below), whose sum is σ = 28691370240. Its totient is φ = 9103990896.

The previous prime is 16656166609. The next prime is 16656166613. The reversal of 16656166611 is 11666165661.

It is an interprime number because it is at equal distance from previous prime (16656166609) and next prime (16656166613).

It is not a de Polignac number, because 16656166611 - 2¹ = 16656166609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16656166613) 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 23 ways as a sum of consecutive naturals, for example, 5746021 + ... + 5748918.

It is an arithmetic number, because the mean of its divisors is an integer number (1195473760).

Almost surely, 2^16656166611 is an apocalyptic number.

16656166611 is a deficient number, since it is larger than the sum of its proper divisors (12035203629).

16656166611 is a wasteful number, since it uses less digits than its factorization.

16656166611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11494975 (or 11494972 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The spelling of 16656166611 in words is "sixteen billion, six hundred fifty-six million, one hundred sixty-six thousand, six hundred eleven".