6509539842873 has 16 divisors (see below), whose sum is σ = 8686056384000. Its totient is φ = 4336358714240.

The previous prime is 6509539842811. The next prime is 6509539842941. The reversal of 6509539842873 is 3782489359056.

It is a cyclic number.

It is not a de Polignac number, because 6509539842873 - 2¹² = 6509539838777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6509539842798 and 6509539842807.

It is not an unprimeable number, because it can be changed into a prime (6509539842073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68510803 + ... + 68605751.

It is an arithmetic number, because the mean of its divisors is an integer number (542878524000).

Almost surely, 2^{6509539842873} is an apocalyptic number.

It is an amenable number.

6509539842873 is a deficient number, since it is larger than the sum of its proper divisors (2176516541127).

6509539842873 is a wasteful number, since it uses less digits than its factorization.

6509539842873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112272.

The product of its (nonzero) digits is 391910400, while the sum is 69.

The spelling of 6509539842873 in words is "six trillion, five hundred nine billion, five hundred thirty-nine million, eight hundred forty-two thousand, eight hundred seventy-three".