6338644977 has 16 divisors (see below), whose sum is σ = 9894471552. Its totient is φ = 3533738880.

The previous prime is 6338644943. The next prime is 6338644979. The reversal of 6338644977 is 7794468336.

It is a happy number.

6338644977 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6338644977 - 2⁷ = 6338644849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6338644979) 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 15 ways as a sum of consecutive naturals, for example, 3680118 + ... + 3681839.

It is an arithmetic number, because the mean of its divisors is an integer number (618404472).

Almost surely, 2^6338644977 is an apocalyptic number.

It is an amenable number.

6338644977 is a deficient number, since it is larger than the sum of its proper divisors (3555826575).

6338644977 is a wasteful number, since it uses less digits than its factorization.

6338644977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7362008.

The product of its digits is 18289152, while the sum is 57.

The square root of 6338644977 is about 79615.6076218727. The cubic root of 6338644977 is about 1850.6834559736.

The spelling of 6338644977 in words is "six billion, three hundred thirty-eight million, six hundred forty-four thousand, nine hundred seventy-seven".