2271451666 has 16 divisors (see below), whose sum is σ = 3723383520. Its totient is φ = 1030682880.

The previous prime is 2271451661. The next prime is 2271451697. The reversal of 2271451666 is 6661541722.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2271451661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76776 + ... + 102163.

It is an arithmetic number, because the mean of its divisors is an integer number (232711470).

Almost surely, 2^2271451666 is an apocalyptic number.

2271451666 is a deficient number, since it is larger than the sum of its proper divisors (1451931854).

2271451666 is a wasteful number, since it uses less digits than its factorization.

2271451666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179529.

The product of its digits is 120960, while the sum is 40.

The square root of 2271451666 is about 47659.7489082769. The cubic root of 2271451666 is about 1314.5219225275.

The spelling of 2271451666 in words is "two billion, two hundred seventy-one million, four hundred fifty-one thousand, six hundred sixty-six".