6478247992 has 8 divisors (see below), whose sum is σ = 12146715000. Its totient is φ = 3239123992.

The previous prime is 6478247989. The next prime is 6478248001. The reversal of 6478247992 is 2997428746.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404890492 + ... + 404890507.

It is an arithmetic number, because the mean of its divisors is an integer number (1518339375).

Almost surely, 2^6478247992 is an apocalyptic number.

It is an amenable number.

6478247992 is a deficient number, since it is larger than the sum of its proper divisors (5668467008).

6478247992 is a wasteful number, since it uses less digits than its factorization.

6478247992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809781005 (or 809781001 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 58.

The square root of 6478247992 is about 80487.5642071494. The cubic root of 6478247992 is about 1864.1714669394.

The spelling of 6478247992 in words is "six billion, four hundred seventy-eight million, two hundred forty-seven thousand, nine hundred ninety-two".