6865161320 has 64 divisors (see below), whose sum is σ = 16403688000. Its totient is φ = 2578480128.

The previous prime is 6865161293. The next prime is 6865161341. The reversal of 6865161320 is 231615686.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 45911 + ... + 125849.

It is an arithmetic number, because the mean of its divisors is an integer number (256307625).

Almost surely, 2^6865161320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6865161320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8201844000).

6865161320 is an abundant number, since it is smaller than the sum of its proper divisors (9538526680).

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

6865161320 is a wasteful number, since it uses less digits than its factorization.

6865161320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80082 (or 80078 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6865161320 is about 82856.2690446535. The cubic root of 6865161320 is about 1900.5687420177.

The spelling of 6865161320 in words is "six billion, eight hundred sixty-five million, one hundred sixty-one thousand, three hundred twenty".