2110161265 has 4 divisors (see below), whose sum is σ = 2532193524. Its totient is φ = 1688129008.

The previous prime is 2110161233. The next prime is 2110161281. The reversal of 2110161265 is 5621610112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1270494736 + 839666529 = 35644^2 + 28977^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110161265 - 2⁵ = 2110161233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211016122 + ... + 211016131.

It is an arithmetic number, because the mean of its divisors is an integer number (633048381).

Almost surely, 2^2110161265 is an apocalyptic number.

It is an amenable number.

2110161265 is a deficient number, since it is larger than the sum of its proper divisors (422032259).

2110161265 is an equidigital number, since it uses as much as digits as its factorization.

2110161265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422032258.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 2110161265 is about 45936.4916487970. The cubic root of 2110161265 is about 1282.6412876780.

Adding to 2110161265 its reverse (5621610112), we get a palindrome (7731771377).

The spelling of 2110161265 in words is "two billion, one hundred ten million, one hundred sixty-one thousand, two hundred sixty-five".