6447815048 has 32 divisors (see below), whose sum is σ = 12251088000. Its totient is φ = 3180914880.

The previous prime is 6447815039. The next prime is 6447815051. The reversal of 6447815048 is 8405187446.

It is a junction number, because it is equal to n+sod(n) for n = 6447814993 and 6447815011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1305143 + ... + 1310073.

It is an arithmetic number, because the mean of its divisors is an integer number (382846500).

Almost surely, 2^6447815048 is an apocalyptic number.

It is an amenable number.

6447815048 is a deficient number, since it is larger than the sum of its proper divisors (5803272952).

6447815048 is a wasteful number, since it uses less digits than its factorization.

6447815048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7085 (or 7081 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 47.

The square root of 6447815048 is about 80298.2879518611. The cubic root of 6447815048 is about 1861.2477702994.

The spelling of 6447815048 in words is "six billion, four hundred forty-seven million, eight hundred fifteen thousand, forty-eight".