2101165653 has 8 divisors (see below), whose sum is σ = 2801910400. Its totient is φ = 1400599008.

The previous prime is 2101165603. The next prime is 2101165669. The reversal of 2101165653 is 3565611012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2101165653 - 2⁶ = 2101165589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101165653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101165603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14008 + ... + 66321.

It is an arithmetic number, because the mean of its divisors is an integer number (350238800).

Almost surely, 2^2101165653 is an apocalyptic number.

It is an amenable number.

2101165653 is a deficient number, since it is larger than the sum of its proper divisors (700744747).

2101165653 is an equidigital number, since it uses as much as digits as its factorization.

2101165653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89051.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 2101165653 is about 45838.4735020703. The cubic root of 2101165653 is about 1280.8160594070.

Adding to 2101165653 its reverse (3565611012), we get a palindrome (5666776665).

The spelling of 2101165653 in words is "two billion, one hundred one million, one hundred sixty-five thousand, six hundred fifty-three".