6478999488 has 280 divisors, whose sum is σ = 20873549312. Its totient is φ = 1975228416.

The previous prime is 6478999463. The next prime is 6478999493. The reversal of 6478999488 is 8849998746.

6478999488 is a `hidden beast` number, since 64 + 7 + 89 + 9 + 9 + 488 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8558406 + ... + 8559162.

Almost surely, 2^6478999488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6478999488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10436774656).

6478999488 is an abundant number, since it is smaller than the sum of its proper divisors (14394549824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6478999488 is a wasteful number, since it uses less digits than its factorization.

6478999488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 902 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 72.

The square root of 6478999488 is about 80492.2324699719. The cubic root of 6478999488 is about 1864.2435472938.

The spelling of 6478999488 in words is "six billion, four hundred seventy-eight million, nine hundred ninety-nine thousand, four hundred eighty-eight".