4778120808 has 24 divisors (see below), whose sum is σ = 12940744050. Its totient is φ = 1592706912.

The previous prime is 4778120803. The next prime is 4778120821. The reversal of 4778120808 is 8080218774.

4778120808 is a `hidden beast` number, since 477 + 81 + 20 + 80 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3725637444 + 1052483364 = 61038^2 + 32442^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (4778120803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33181323 + ... + 33181466.

Almost surely, 2^4778120808 is an apocalyptic number.

It is an amenable number.

4778120808 is an abundant number, since it is smaller than the sum of its proper divisors (8162623242).

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

4778120808 is a wasteful number, since it uses less digits than its factorization.

4778120808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66362801 (or 66362794 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The square root of 4778120808 is about 69123.9524911590. The cubic root of 4778120808 is about 1684.2984230113.

The spelling of 4778120808 in words is "four billion, seven hundred seventy-eight million, one hundred twenty thousand, eight hundred eight".