4057675721 has 16 divisors (see below), whose sum is σ = 4477731840. Its totient is φ = 3646302480.

The previous prime is 4057675711. The next prime is 4057675751. The reversal of 4057675721 is 1275767504.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4057675721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4057675711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569660 + ... + 576738.

It is an arithmetic number, because the mean of its divisors is an integer number (279858240).

Almost surely, 2^4057675721 is an apocalyptic number.

It is an amenable number.

4057675721 is a deficient number, since it is larger than the sum of its proper divisors (420056119).

4057675721 is a wasteful number, since it uses less digits than its factorization.

4057675721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7684.

The product of its (nonzero) digits is 411600, while the sum is 44.

The square root of 4057675721 is about 63699.8879198386. The cubic root of 4057675721 is about 1594.9942146585.

The spelling of 4057675721 in words is "four billion, fifty-seven million, six hundred seventy-five thousand, seven hundred twenty-one".