4778306688 has 256 divisors, whose sum is σ = 14042903040. Its totient is φ = 1433272320.

The previous prime is 4778306683. The next prime is 4778306693. The reversal of 4778306688 is 8866038774.

It is an interprime number because it is at equal distance from previous prime (4778306683) and next prime (4778306693).

It is not an unprimeable number, because it can be changed into a prime (4778306683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17631993 + ... + 17632263.

It is an arithmetic number, because the mean of its divisors is an integer number (54855090).

Almost surely, 2^4778306688 is an apocalyptic number.

4778306688 is a gapful number since it is divisible by the number (48) 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 4778306688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7021451520).

4778306688 is an abundant number, since it is smaller than the sum of its proper divisors (9264596352).

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

4778306688 is a wasteful number, since it uses less digits than its factorization.

4778306688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 57.

The square root of 4778306688 is about 69125.2970192534. The cubic root of 4778306688 is about 1684.3202637686.

The spelling of 4778306688 in words is "four billion, seven hundred seventy-eight million, three hundred six thousand, six hundred eighty-eight".