4778613770920 has 128 divisors (see below), whose sum is σ = 12113419207680. Its totient is φ = 1680827904000.

The previous prime is 4778613770857. The next prime is 4778613770923. The reversal of 4778613770920 is 290773168774.

It is not an unprimeable number, because it can be changed into a prime (4778613770923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29121424 + ... + 29285056.

It is an arithmetic number, because the mean of its divisors is an integer number (94636087560).

Almost surely, 2^{4778613770920} is an apocalyptic number.

4778613770920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4778613770920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6056709603840).

4778613770920 is an abundant number, since it is smaller than the sum of its proper divisors (7334805436760).

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

4778613770920 is a wasteful number, since it uses less digits than its factorization.

4778613770920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165827 (or 165823 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 61.

The spelling of 4778613770920 in words is "four trillion, seven hundred seventy-eight billion, six hundred thirteen million, seven hundred seventy thousand, nine hundred twenty".