6544847880 has 96 divisors (see below), whose sum is σ = 21281045760. Its totient is φ = 1744448640.

The previous prime is 6544847849. The next prime is 6544847909. The reversal of 6544847880 is 887484456.

6544847880 is a `hidden beast` number, since 6 + 54 + 48 + 478 + 80 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1193545 + ... + 1199015.

It is an arithmetic number, because the mean of its divisors is an integer number (221677560).

Almost surely, 2^6544847880 is an apocalyptic number.

6544847880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6544847880 is an abundant number, since it is smaller than the sum of its proper divisors (14736197880).

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

6544847880 is a wasteful number, since it uses less digits than its factorization.

6544847880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8811 (or 8804 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 54.

The square root of 6544847880 is about 80900.2341158541. The cubic root of 6544847880 is about 1870.5379294508.

The spelling of 6544847880 in words is "six billion, five hundred forty-four million, eight hundred forty-seven thousand, eight hundred eighty".