4781639880 has 48 divisors (see below), whose sum is σ = 15540330780. Its totient is φ = 1275103872.

The previous prime is 4781639843. The next prime is 4781639881. The reversal of 4781639880 is 889361874.

4781639880 is a `hidden beast` number, since 478 + 1 + 6 + 3 + 98 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4700747844 + 80892036 = 68562^2 + 8994^2 .

It is not an unprimeable number, because it can be changed into a prime (4781639881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6640807 + ... + 6641526.

Almost surely, 2^4781639880 is an apocalyptic number.

4781639880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4781639880 is an abundant number, since it is smaller than the sum of its proper divisors (10758690900).

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

4781639880 is a wasteful number, since it uses less digits than its factorization.

4781639880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13282350 (or 13282343 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 4781639880 is about 69149.4026004564. The cubic root of 4781639880 is about 1684.7118151613.

The spelling of 4781639880 in words is "four billion, seven hundred eighty-one million, six hundred thirty-nine thousand, eight hundred eighty".