2721448791 has 12 divisors (see below), whose sum is σ = 4162216032. Its totient is φ = 1707575616.

The previous prime is 2721448789. The next prime is 2721448811. The reversal of 2721448791 is 1978441272.

2721448791 is a `hidden beast` number, since 2 + 72 + 14 + 487 + 91 = 666.

It is not a de Polignac number, because 2721448791 - 2¹ = 2721448789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721448771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8893471 + ... + 8893776.

It is an arithmetic number, because the mean of its divisors is an integer number (346851336).

Almost surely, 2^2721448791 is an apocalyptic number.

2721448791 is a deficient number, since it is larger than the sum of its proper divisors (1440767241).

2721448791 is a wasteful number, since it uses less digits than its factorization.

2721448791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17787270 (or 17787267 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 2721448791 is about 52167.5070422193. The cubic root of 2721448791 is about 1396.1542056661.

The spelling of 2721448791 in words is "two billion, seven hundred twenty-one million, four hundred forty-eight thousand, seven hundred ninety-one".