2104361665 has 16 divisors (see below), whose sum is σ = 2920756608. Its totient is φ = 1425603456.

The previous prime is 2104361639. The next prime is 2104361689. The reversal of 2104361665 is 5661634012.

It is a cyclic number.

It is not a de Polignac number, because 2104361665 - 2⁷ = 2104361537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2104361665.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359292 + ... + 365101.

It is an arithmetic number, because the mean of its divisors is an integer number (182547288).

Almost surely, 2^2104361665 is an apocalyptic number.

It is an amenable number.

2104361665 is a deficient number, since it is larger than the sum of its proper divisors (816394943).

2104361665 is an equidigital number, since it uses as much as digits as its factorization.

2104361665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724488.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 2104361665 is about 45873.3219311617. The cubic root of 2104361665 is about 1281.4651324180.

Adding to 2104361665 its reverse (5661634012), we get a palindrome (7765995677).

The spelling of 2104361665 in words is "two billion, one hundred four million, three hundred sixty-one thousand, six hundred sixty-five".