4048577721 has 20 divisors (see below), whose sum is σ = 6050675664. Its totient is φ = 2697802200.

The previous prime is 4048577719. The next prime is 4048577789. The reversal of 4048577721 is 1277758404.

4048577721 is a `hidden beast` number, since 4 + 0 + 4 + 8 + 577 + 72 + 1 = 666.

It is not a de Polignac number, because 4048577721 - 2¹ = 4048577719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4048577521) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 184926 + ... + 205656.

Almost surely, 2^4048577721 is an apocalyptic number.

It is an amenable number.

4048577721 is a deficient number, since it is larger than the sum of its proper divisors (2002097943).

4048577721 is a wasteful number, since it uses less digits than its factorization.

4048577721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23154 (or 23145 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The square root of 4048577721 is about 63628.4348463798. The cubic root of 4048577721 is about 1593.8012397090.

The spelling of 4048577721 in words is "four billion, forty-eight million, five hundred seventy-seven thousand, seven hundred twenty-one".