2162365666 has 8 divisors (see below), whose sum is σ = 3322659564. Its totient is φ = 1054812480.

The previous prime is 2162365663. The next prime is 2162365679. The reversal of 2162365666 is 6665632612.

It can be written as a sum of positive squares in 2 ways, for example, as 2160855225 + 1510441 = 46485^2 + 1229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2162365663) 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, 13185075 + ... + 13185238.

Almost surely, 2^2162365666 is an apocalyptic number.

2162365666 is a deficient number, since it is larger than the sum of its proper divisors (1160293898).

2162365666 is a wasteful number, since it uses less digits than its factorization.

2162365666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26370356.

The product of its digits is 466560, while the sum is 43.

The square root of 2162365666 is about 46501.2437037979. The cubic root of 2162365666 is about 1293.1325559983.

The spelling of 2162365666 in words is "two billion, one hundred sixty-two million, three hundred sixty-five thousand, six hundred sixty-six".