6809313202861 has 16 divisors (see below), whose sum is σ = 7401108391600. Its totient is φ = 6227243877888.

The previous prime is 6809313202829. The next prime is 6809313202919. The reversal of 6809313202861 is 1682023139086.

It can be written as a sum of positive squares in 8 ways, for example, as 1199449897636 + 5609863305225 = 1095194^2 + 2368515^2 .

It is a cyclic number.

It is not a de Polignac number, because 6809313202861 - 2⁵ = 6809313202829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6809313202061) 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, 14547505 + ... + 15008281.

It is an arithmetic number, because the mean of its divisors is an integer number (462569274475).

Almost surely, 2^{6809313202861} is an apocalyptic number.

It is an amenable number.

6809313202861 is a deficient number, since it is larger than the sum of its proper divisors (591795188739).

6809313202861 is a wasteful number, since it uses less digits than its factorization.

6809313202861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471328.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 6809313202861 in words is "six trillion, eight hundred nine billion, three hundred thirteen million, two hundred two thousand, eight hundred sixty-one".