4105773625721 has 4 divisors (see below), whose sum is σ = 4105792001652. Its totient is φ = 4105755249792.

The previous prime is 4105773625669. The next prime is 4105773625729. The reversal of 4105773625721 is 1275263775014.

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 1338674454121 + 2767099171600 = 1157011^2 + 1663460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4105773625721 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 4105773625721.

It is not an unprimeable number, because it can be changed into a prime (4105773625729) 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, 8848640 + ... + 9301073.

It is an arithmetic number, because the mean of its divisors is an integer number (1026448000413).

Almost surely, 2^{4105773625721} is an apocalyptic number.

It is an amenable number.

4105773625721 is a deficient number, since it is larger than the sum of its proper divisors (18375931).

4105773625721 is a wasteful number, since it uses less digits than its factorization.

4105773625721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18375930.

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 4105773625721 in words is "four trillion, one hundred five billion, seven hundred seventy-three million, six hundred twenty-five thousand, seven hundred twenty-one".