6671263444 has 24 divisors (see below), whose sum is σ = 11930143680. Its totient is φ = 3263432064.

The previous prime is 6671263393. The next prime is 6671263477. The reversal of 6671263444 is 4443621766.

It is a happy number.

It is a super-2 number, since 2×6671263444² = 89011511878501482272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6671263444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63349 + ... + 131740.

It is an arithmetic number, because the mean of its divisors is an integer number (497089320).

Almost surely, 2^6671263444 is an apocalyptic number.

It is an amenable number.

6671263444 is a deficient number, since it is larger than the sum of its proper divisors (5258880236).

6671263444 is a wasteful number, since it uses less digits than its factorization.

6671263444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195279 (or 195277 counting only the distinct ones).

The product of its digits is 580608, while the sum is 43.

The square root of 6671263444 is about 81677.8026393952. The cubic root of 6671263444 is about 1882.5045316867.

The spelling of 6671263444 in words is "six billion, six hundred seventy-one million, two hundred sixty-three thousand, four hundred forty-four".