6543751272 has 16 divisors (see below), whose sum is σ = 16359378240. Its totient is φ = 2181250416.

The previous prime is 6543751261. The next prime is 6543751273. The reversal of 6543751272 is 2721573456.

It is not an unprimeable number, because it can be changed into a prime (6543751273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136328128 + ... + 136328175.

It is an arithmetic number, because the mean of its divisors is an integer number (1022461140).

Almost surely, 2^6543751272 is an apocalyptic number.

It is an amenable number.

6543751272 is an abundant number, since it is smaller than the sum of its proper divisors (9815626968).

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

6543751272 is a wasteful number, since it uses less digits than its factorization.

6543751272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272656312 (or 272656308 counting only the distinct ones).

The product of its digits is 352800, while the sum is 42.

The square root of 6543751272 is about 80893.4562990110. The cubic root of 6543751272 is about 1870.4334522870.

The spelling of 6543751272 in words is "six billion, five hundred forty-three million, seven hundred fifty-one thousand, two hundred seventy-two".