6543751604 has 48 divisors (see below), whose sum is σ = 12464130000. Its totient is φ = 2988112896.

The previous prime is 6543751589. The next prime is 6543751631. The reversal of 6543751604 is 4061573456.

It can be written as a sum of positive squares in 8 ways, for example, as 3481236004 + 3062515600 = 59002^2 + 55340^2 .

It is a super-4 number, since 4×6543751604⁴ (a number of 40 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2144672 + ... + 2147720.

It is an arithmetic number, because the mean of its divisors is an integer number (259669375).

Almost surely, 2^6543751604 is an apocalyptic number.

It is an amenable number.

6543751604 is a deficient number, since it is larger than the sum of its proper divisors (5920378396).

6543751604 is a wasteful number, since it uses less digits than its factorization.

6543751604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3492 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 6543751604 is about 80893.4583510929. The cubic root of 6543751604 is about 1870.4334839194.

The spelling of 6543751604 in words is "six billion, five hundred forty-three million, seven hundred fifty-one thousand, six hundred four".