6440641110 has 48 divisors (see below), whose sum is σ = 16757395200. Its totient is φ = 1716301440.

The previous prime is 6440641061. The next prime is 6440641157. The reversal of 6440641110 is 111460446.

6440641110 is a `hidden beast` number, since 6 + 4 + 4 + 0 + 641 + 1 + 10 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108066 + ... + 156714.

It is an arithmetic number, because the mean of its divisors is an integer number (349112400).

Almost surely, 2^6440641110 is an apocalyptic number.

6440641110 is an abundant number, since it is smaller than the sum of its proper divisors (10316754090).

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

6440641110 is a wasteful number, since it uses less digits than its factorization.

6440641110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50133 (or 50130 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 6440641110 is about 80253.6049657584. The cubic root of 6440641110 is about 1860.5572298540.

The spelling of 6440641110 in words is "six billion, four hundred forty million, six hundred forty-one thousand, one hundred ten".