2110162661 has 4 divisors (see below), whose sum is σ = 2110275852. Its totient is φ = 2110049472.

The previous prime is 2110162657. The next prime is 2110162687. The reversal of 2110162661 is 1662610112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1420837636 + 689325025 = 37694^2 + 26255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110162661 - 2² = 2110162657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2110162661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110162631) 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, 21290 + ... + 68363.

It is an arithmetic number, because the mean of its divisors is an integer number (527568963).

Almost surely, 2^2110162661 is an apocalyptic number.

It is an amenable number.

2110162661 is a deficient number, since it is larger than the sum of its proper divisors (113191).

2110162661 is an equidigital number, since it uses as much as digits as its factorization.

2110162661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113190.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 2110162661 is about 45936.5068436859. The cubic root of 2110162661 is about 1282.6415705264.

Adding to 2110162661 its reverse (1662610112), we get a palindrome (3772772773).

The spelling of 2110162661 in words is "two billion, one hundred ten million, one hundred sixty-two thousand, six hundred sixty-one".