4105721051 has 4 divisors (see below), whose sum is σ = 4347234072. Its totient is φ = 3864208032.

The previous prime is 4105721041. The next prime is 4105721071. The reversal of 4105721051 is 1501275014.

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

It is a cyclic number.

It is not a de Polignac number, because 4105721051 - 2⁶ = 4105720987 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 4105721051.

It is not an unprimeable number, because it can be changed into a prime (4105721041) 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, 120756485 + ... + 120756518.

It is an arithmetic number, because the mean of its divisors is an integer number (1086808518).

Almost surely, 2^4105721051 is an apocalyptic number.

4105721051 is a deficient number, since it is larger than the sum of its proper divisors (241513021).

4105721051 is a wasteful number, since it uses less digits than its factorization.

4105721051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241513020.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 4105721051 is about 64075.9007037747. The cubic root of 4105721051 is about 1601.2647618215.

Adding to 4105721051 its reverse (1501275014), we get a palindrome (5606996065).

The spelling of 4105721051 in words is "four billion, one hundred five million, seven hundred twenty-one thousand, fifty-one".