2065105664 has 36 divisors (see below), whose sum is σ = 4128736920. Its totient is φ = 1030901760.

The previous prime is 2065105661. The next prime is 2065105699. The reversal of 2065105664 is 4665015602.

It is a super-2 number, since 2×2065105664² = 8529322806969761792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2065105661) 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, 162584 + ... + 174824.

Almost surely, 2^2065105664 is an apocalyptic number.

It is an amenable number.

2065105664 is a deficient number, since it is larger than the sum of its proper divisors (2063631256).

2065105664 is an equidigital number, since it uses as much as digits as its factorization.

2065105664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12916 (or 12902 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 2065105664 is about 45443.4336730842. The cubic root of 2065105664 is about 1273.4466617577.

The spelling of 2065105664 in words is "two billion, sixty-five million, one hundred five thousand, six hundred sixty-four".