6481771824 has 40 divisors (see below), whose sum is σ = 18266812992. Its totient is φ = 1964173120.

The previous prime is 6481771823. The next prime is 6481771837. The reversal of 6481771824 is 4281771846.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (6481771823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6137514 + ... + 6138569.

Almost surely, 2^6481771824 is an apocalyptic number.

It is an amenable number.

6481771824 is an abundant number, since it is smaller than the sum of its proper divisors (11785041168).

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

6481771824 is a wasteful number, since it uses less digits than its factorization.

6481771824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12276105 (or 12276099 counting only the distinct ones).

The product of its digits is 602112, while the sum is 48.

The square root of 6481771824 is about 80509.4517680999. The cubic root of 6481771824 is about 1864.5094099741.

The spelling of 6481771824 in words is "six billion, four hundred eighty-one million, seven hundred seventy-one thousand, eight hundred twenty-four".