6550478307 has 24 divisors (see below), whose sum is σ = 9530416896. Its totient is φ = 4335384816.

The previous prime is 6550478303. The next prime is 6550478309. The reversal of 6550478307 is 7038740556.

6550478307 is a `hidden beast` number, since 65 + 504 + 7 + 83 + 0 + 7 = 666.

It is not a de Polignac number, because 6550478307 - 2² = 6550478303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6550478303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1451148 + ... + 1455654.

It is an arithmetic number, because the mean of its divisors is an integer number (397100704).

Almost surely, 2^6550478307 is an apocalyptic number.

6550478307 is a deficient number, since it is larger than the sum of its proper divisors (2979938589).

6550478307 is a wasteful number, since it uses less digits than its factorization.

6550478307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647 (or 5644 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 6550478307 is about 80935.0252177634. The cubic root of 6550478307 is about 1871.0741735698.

The spelling of 6550478307 in words is "six billion, five hundred fifty million, four hundred seventy-eight thousand, three hundred seven".