6665217548 has 12 divisors (see below), whose sum is σ = 12724506312. Its totient is φ = 3029644320.

The previous prime is 6665217529. The next prime is 6665217563. The reversal of 6665217548 is 8457125666.

It is a junction number, because it is equal to n+sod(n) for n = 6665217496 and 6665217505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75741065 + ... + 75741152.

It is an arithmetic number, because the mean of its divisors is an integer number (1060375526).

Almost surely, 2^6665217548 is an apocalyptic number.

It is an amenable number.

6665217548 is a deficient number, since it is larger than the sum of its proper divisors (6059288764).

6665217548 is a wasteful number, since it uses less digits than its factorization.

6665217548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151482232 (or 151482230 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 50.

The square root of 6665217548 is about 81640.7836072144. The cubic root of 6665217548 is about 1881.9356805927.

The spelling of 6665217548 in words is "six billion, six hundred sixty-five million, two hundred seventeen thousand, five hundred forty-eight".