4778066268 has 72 divisors (see below), whose sum is σ = 12892763520. Its totient is φ = 1487596320.

The previous prime is 4778066261. The next prime is 4778066269. The reversal of 4778066268 is 8626608774.

4778066268 is a `hidden beast` number, since 4 + 7 + 7 + 8 + 0 + 6 + 626 + 8 = 666.

It is a super-2 number, since 2×4778066268² = 45659834522798895648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778066261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 630 + ... + 97757.

It is an arithmetic number, because the mean of its divisors is an integer number (179066160).

Almost surely, 2^4778066268 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 4778066268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6446381760).

4778066268 is an abundant number, since it is smaller than the sum of its proper divisors (8114697252).

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

4778066268 is a wasteful number, since it uses less digits than its factorization.

4778066268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98487 (or 98482 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The square root of 4778066268 is about 69123.5579813424. The cubic root of 4778066268 is about 1684.2920144956.

The spelling of 4778066268 in words is "four billion, seven hundred seventy-eight million, sixty-six thousand, two hundred sixty-eight".