6549501372 has 12 divisors (see below), whose sum is σ = 15282169896. Its totient is φ = 2183167120.

The previous prime is 6549501359. The next prime is 6549501377. The reversal of 6549501372 is 2731059456.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6549501377) 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 3 ways as a sum of consecutive naturals, for example, 272895879 + ... + 272895902.

It is an arithmetic number, because the mean of its divisors is an integer number (1273514158).

Almost surely, 2^6549501372 is an apocalyptic number.

It is an amenable number.

6549501372 is an abundant number, since it is smaller than the sum of its proper divisors (8732668524).

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

6549501372 is a wasteful number, since it uses less digits than its factorization.

6549501372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545791788 (or 545791786 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 6549501372 is about 80928.9896884917. The cubic root of 6549501372 is about 1870.9811519287.

The spelling of 6549501372 in words is "six billion, five hundred forty-nine million, five hundred one thousand, three hundred seventy-two".