4778477550 has 540 divisors, whose sum is σ = 17061798600. Its totient is φ = 987940800.

The previous prime is 4778477527. The next prime is 4778477569. The reversal of 4778477550 is 557748774.

4778477550 is a `hidden beast` number, since 4 + 7 + 7 + 84 + 7 + 7 + 550 = 666.

It is a super-3 number, since 3×4778477550³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 269 ways as a sum of consecutive naturals, for example, 24012351 + ... + 24012549.

Almost surely, 2^4778477550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4778477550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8530899300).

4778477550 is an abundant number, since it is smaller than the sum of its proper divisors (12283321050).

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

4778477550 is a wasteful number, since it uses less digits than its factorization.

4778477550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 7683200, while the sum is 54.

The square root of 4778477550 is about 69126.5328943959. The cubic root of 4778477550 is about 1684.3403394228.

The spelling of 4778477550 in words is "four billion, seven hundred seventy-eight million, four hundred seventy-seven thousand, five hundred fifty".