4778378352 has 80 divisors (see below), whose sum is σ = 14962613760. Its totient is φ = 1447992000.

The previous prime is 4778378351. The next prime is 4778378359. The reversal of 4778378352 is 2538738774.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778378351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498024 + ... + 507527.

It is an arithmetic number, because the mean of its divisors is an integer number (187032672).

Almost surely, 2^4778378352 is an apocalyptic number.

It is an amenable number.

4778378352 is an abundant number, since it is smaller than the sum of its proper divisors (10184235408).

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

4778378352 is a wasteful number, since it uses less digits than its factorization.

4778378352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005579 (or 1005567 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 54.

The square root of 4778378352 is about 69125.8153803628. The cubic root of 4778378352 is about 1684.3286840823.

4778378352 divided by its sum of digits (54) gives a palindrome (88488488).

The spelling of 4778378352 in words is "four billion, seven hundred seventy-eight million, three hundred seventy-eight thousand, three hundred fifty-two".