6778856448 has 528 divisors, whose sum is σ = 24677976960. Its totient is φ = 1744699392.

The previous prime is 6778856443. The next prime is 6778856453. The reversal of 6778856448 is 8446588776.

6778856448 is a `hidden beast` number, since 67 + 7 + 8 + 8 + 564 + 4 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (6778856443) and next prime (6778856453).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (6778856443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49480636 + ... + 49480772.

Almost surely, 2^6778856448 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 6778856448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12338988480).

6778856448 is an abundant number, since it is smaller than the sum of its proper divisors (17899120512).

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

6778856448 is a wasteful number, since it uses less digits than its factorization.

6778856448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 221 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 63.

The square root of 6778856448 is about 82333.8110863332. The cubic root of 6778856448 is about 1892.5708459606.

The spelling of 6778856448 in words is "six billion, seven hundred seventy-eight million, eight hundred fifty-six thousand, four hundred forty-eight".