2171162066 has 16 divisors (see below), whose sum is σ = 3425234688. Its totient is φ = 1030738800.

The previous prime is 2171162051. The next prime is 2171162087. The reversal of 2171162066 is 6602611712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327080 + ... + 333651.

It is an arithmetic number, because the mean of its divisors is an integer number (214077168).

Almost surely, 2^2171162066 is an apocalyptic number.

2171162066 is a deficient number, since it is larger than the sum of its proper divisors (1254072622).

2171162066 is a wasteful number, since it uses less digits than its factorization.

2171162066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660817.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2171162066 is about 46595.7301262680. The cubic root of 2171162066 is about 1294.8836507923.

Adding to 2171162066 its reverse (6602611712), we get a palindrome (8773773778).

The spelling of 2171162066 in words is "two billion, one hundred seventy-one million, one hundred sixty-two thousand, sixty-six".