4778385816 has 32 divisors (see below), whose sum is σ = 11949618240. Its totient is φ = 1592308128.

The previous prime is 4778385809. The next prime is 4778385817. The reversal of 4778385816 is 6185838774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778385817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54495 + ... + 111921.

It is an arithmetic number, because the mean of its divisors is an integer number (373425570).

Almost surely, 2^4778385816 is an apocalyptic number.

It is an amenable number.

4778385816 is an abundant number, since it is smaller than the sum of its proper divisors (7171232424).

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

4778385816 is a wasteful number, since it uses less digits than its factorization.

4778385816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60903 (or 60899 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 57.

The square root of 4778385816 is about 69125.8693688550. The cubic root of 4778385816 is about 1684.3295610760.

The spelling of 4778385816 in words is "four billion, seven hundred seventy-eight million, three hundred eighty-five thousand, eight hundred sixteen".