6804128261 has 8 divisors (see below), whose sum is σ = 7822711680. Its totient is φ = 5797186128.

The previous prime is 6804128237. The next prime is 6804128273. The reversal of 6804128261 is 1628214086.

It is a happy number.

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 6804128261 - 2¹⁴ = 6804111877 is a prime.

It is a super-2 number, since 2×6804128261² = 92592322784277768242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6804128281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2909066 + ... + 2911403.

It is an arithmetic number, because the mean of its divisors is an integer number (977838960).

Almost surely, 2^6804128261 is an apocalyptic number.

It is an amenable number.

6804128261 is a deficient number, since it is larger than the sum of its proper divisors (1018583419).

6804128261 is a wasteful number, since it uses less digits than its factorization.

6804128261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5820643.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 6804128261 is about 82487.1399734528. The cubic root of 6804128261 is about 1894.9197860798.

The spelling of 6804128261 in words is "six billion, eight hundred four million, one hundred twenty-eight thousand, two hundred sixty-one".