6851265605 has 8 divisors (see below), whose sum is σ = 8245916952. Its totient is φ = 5464747008.

The previous prime is 6851265601. The next prime is 6851265653. The reversal of 6851265605 is 5065621586.

It can be written as a sum of positive squares in 4 ways, for example, as 1237210276 + 5614055329 = 35174^2 + 74927^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6851265605 - 2² = 6851265601 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 (6851265601) 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 7 ways as a sum of consecutive naturals, for example, 2031332 + ... + 2034701.

It is an arithmetic number, because the mean of its divisors is an integer number (1030739619).

Almost surely, 2^6851265605 is an apocalyptic number.

It is an amenable number.

6851265605 is a deficient number, since it is larger than the sum of its proper divisors (1394651347).

6851265605 is a wasteful number, since it uses less digits than its factorization.

6851265605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066375.

The product of its (nonzero) digits is 432000, while the sum is 44.

The square root of 6851265605 is about 82772.3722325270. The cubic root of 6851265605 is about 1899.2855674982.

The spelling of 6851265605 in words is "six billion, eight hundred fifty-one million, two hundred sixty-five thousand, six hundred five".