6644071055 has 8 divisors (see below), whose sum is σ = 8018972352. Its totient is φ = 5284532128.

The previous prime is 6644071009. The next prime is 6644071073. The reversal of 6644071055 is 5501704466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6644071055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3839639 + ... + 3841368.

It is an arithmetic number, because the mean of its divisors is an integer number (1002371544).

Almost surely, 2^6644071055 is an apocalyptic number.

6644071055 is a deficient number, since it is larger than the sum of its proper divisors (1374901297).

6644071055 is a wasteful number, since it uses less digits than its factorization.

6644071055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7681185.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 6644071055 is about 81511.1713509259. The cubic root of 6644071055 is about 1879.9433224765.

The spelling of 6644071055 in words is "six billion, six hundred forty-four million, seventy-one thousand, fifty-five".