6543816246 has 96 divisors (see below), whose sum is σ = 15818789376. Its totient is φ = 1954537200.

The previous prime is 6543816241. The next prime is 6543816259. The reversal of 6543816246 is 6426183456.

6543816246 is a `hidden beast` number, since 6 + 543 + 8 + 1 + 62 + 46 = 666.

It is a super-2 number, since 2×6543816246² = 85643062122827065032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543816241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1699095 + ... + 1702941.

It is an arithmetic number, because the mean of its divisors is an integer number (164779056).

Almost surely, 2^6543816246 is an apocalyptic number.

6543816246 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6543816246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7909394688).

6543816246 is an abundant number, since it is smaller than the sum of its proper divisors (9274973130).

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

6543816246 is a wasteful number, since it uses less digits than its factorization.

6543816246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3959 (or 3934 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 6543816246 is about 80893.8579003375. The cubic root of 6543816246 is about 1870.4396428819.

The spelling of 6543816246 in words is "six billion, five hundred forty-three million, eight hundred sixteen thousand, two hundred forty-six".