16660260401611 has 4 divisors (see below), whose sum is σ = 16760022440112. Its totient is φ = 16560498363112.

The previous prime is 16660260401569. The next prime is 16660260401641. The reversal of 16660260401611 is 11610406206661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16660260401611 - 2¹³ = 16660260393419 is a prime.

It is a super-2 number, since 2×16660260401611² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16660260401641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 49881019000 + ... + 49881019333.

It is an arithmetic number, because the mean of its divisors is an integer number (4190005610028).

Almost surely, 2^{16660260401611} is an apocalyptic number.

16660260401611 is a deficient number, since it is larger than the sum of its proper divisors (99762038501).

16660260401611 is an equidigital number, since it uses as much as digits as its factorization.

16660260401611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99762038500.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 16660260401611 in words is "sixteen trillion, six hundred sixty billion, two hundred sixty million, four hundred one thousand, six hundred eleven".