6509140978996 has 12 divisors (see below), whose sum is σ = 11393804480548. Its totient is φ = 3253768270272.

The previous prime is 6509140978939. The next prime is 6509140979039. The reversal of 6509140978996 is 6998790419056.

It can be written as a sum of positive squares in 2 ways, for example, as 1734199272100 + 4774941706896 = 1316890^2 + 2185164^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200536551 + ... + 200569006.

Almost surely, 2^{6509140978996} is an apocalyptic number.

It is an amenable number.

6509140978996 is a deficient number, since it is larger than the sum of its proper divisors (4884663501552).

6509140978996 is a wasteful number, since it uses less digits than its factorization.

6509140978996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401109618 (or 401109616 counting only the distinct ones).

The product of its (nonzero) digits is 264539520, while the sum is 73.

The spelling of 6509140978996 in words is "six trillion, five hundred nine billion, one hundred forty million, nine hundred seventy-eight thousand, nine hundred ninety-six".