2660711611 has 4 divisors (see below), whose sum is σ = 2669792832. Its totient is φ = 2651630392.

The previous prime is 2660711609. The next prime is 2660711621. The reversal of 2660711611 is 1161170662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1161170662 = 2 ⋅580585331.

It is a cyclic number.

It is not a de Polignac number, because 2660711611 - 2¹ = 2660711609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660711621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4540171 + ... + 4540756.

It is an arithmetic number, because the mean of its divisors is an integer number (667448208).

Almost surely, 2^2660711611 is an apocalyptic number.

2660711611 is a deficient number, since it is larger than the sum of its proper divisors (9081221).

2660711611 is an equidigital number, since it uses as much as digits as its factorization.

2660711611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9081220.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 2660711611 is about 51582.0861443195. The cubic root of 2660711611 is about 1385.6895281109.

The spelling of 2660711611 in words is "two billion, six hundred sixty million, seven hundred eleven thousand, six hundred eleven".