2666616271 has 6 divisors (see below), whose sum is σ = 2931074216. Its totient is φ = 2424196500.

The previous prime is 2666616263. The next prime is 2666616289. The reversal of 2666616271 is 1726166662.

It is a happy number.

It is not a de Polignac number, because 2666616271 - 2³ = 2666616263 is a prime.

It is a super-2 number, since 2×2666616271² = 14221684673523890882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666416271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11018955 + ... + 11019196.

Almost surely, 2^2666616271 is an apocalyptic number.

2666616271 is a deficient number, since it is larger than the sum of its proper divisors (264457945).

2666616271 is a wasteful number, since it uses less digits than its factorization.

2666616271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22038173 (or 22038162 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 2666616271 is about 51639.2899931825. The cubic root of 2666616271 is about 1386.7138130453.

The spelling of 2666616271 in words is "two billion, six hundred sixty-six million, six hundred sixteen thousand, two hundred seventy-one".