5563778816 has 72 divisors (see below), whose sum is σ = 12067776000. Its totient is φ = 2550389760.

The previous prime is 5563778813. The next prime is 5563778839. The reversal of 5563778816 is 6188773655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5563778813) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 132335 + ... + 169233.

It is an arithmetic number, because the mean of its divisors is an integer number (167608000).

Almost surely, 2^5563778816 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 5563778816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6033888000).

5563778816 is an abundant number, since it is smaller than the sum of its proper divisors (6503997184).

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

5563778816 is a wasteful number, since it uses less digits than its factorization.

5563778816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36965 (or 36951 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 56.

The square root of 5563778816 is about 74590.7421601367. The cubic root of 5563778816 is about 1771.9710363217.

The spelling of 5563778816 in words is "five billion, five hundred sixty-three million, seven hundred seventy-eight thousand, eight hundred sixteen".