4878641568 has 24 divisors (see below), whose sum is σ = 12806434368. Its totient is φ = 1626213824.

The previous prime is 4878641563. The next prime is 4878641587. The reversal of 4878641568 is 8651468784.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×4878641568² = 47602287098034997248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4878641561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25409496 + ... + 25409687.

It is an arithmetic number, because the mean of its divisors is an integer number (533601432).

Almost surely, 2^4878641568 is an apocalyptic number.

4878641568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4878641568 is an abundant number, since it is smaller than the sum of its proper divisors (7927792800).

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

4878641568 is a wasteful number, since it uses less digits than its factorization.

4878641568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50819196 (or 50819188 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 57.

The square root of 4878641568 is about 69847.2731608042. The cubic root of 4878641568 is about 1696.0278156409.

The spelling of 4878641568 in words is "four billion, eight hundred seventy-eight million, six hundred forty-one thousand, five hundred sixty-eight".