6504387012 has 18 divisors (see below), whose sum is σ = 16441645038. Its totient is φ = 2168128992.

The previous prime is 6504386981. The next prime is 6504387013. The reversal of 6504387012 is 2107834056.

It can be written as a sum of positive squares in only one way, i.e., 6498939456 + 5447556 = 80616^2 + 2334^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 180677417 = 6504387012 / (6 + 5 + 0 + 4 + 3 + 8 + 7 + 0 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (6504387013) 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 5 ways as a sum of consecutive naturals, for example, 90338673 + ... + 90338744.

Almost surely, 2^6504387012 is an apocalyptic number.

It is an amenable number.

6504387012 is an abundant number, since it is smaller than the sum of its proper divisors (9937258026).

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

6504387012 is a wasteful number, since it uses less digits than its factorization.

6504387012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180677427 (or 180677422 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 6504387012 is about 80649.7799873006. The cubic root of 6504387012 is about 1866.6753447868.

The spelling of 6504387012 in words is "six billion, five hundred four million, three hundred eighty-seven thousand, twelve".