4778539928736 has 192 divisors, whose sum is σ = 14691528327168. Its totient is φ = 1331498585088.

The previous prime is 4778539928713. The next prime is 4778539928741. The reversal of 4778539928736 is 6378299358774.

It is a happy number.

It is a super-3 number, since 3×4778539928736³ (a number of 39 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18742465 + ... + 18995711.

It is an arithmetic number, because the mean of its divisors is an integer number (76518376704).

Almost surely, 2^{4778539928736} 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 4778539928736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7345764163584).

4778539928736 is an abundant number, since it is smaller than the sum of its proper divisors (9912988398432).

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

4778539928736 is a wasteful number, since it uses less digits than its factorization.

4778539928736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253963 (or 253955 counting only the distinct ones).

The product of its digits is 3840721920, while the sum is 78.

The spelling of 4778539928736 in words is "four trillion, seven hundred seventy-eight billion, five hundred thirty-nine million, nine hundred twenty-eight thousand, seven hundred thirty-six".