6441273427 has 16 divisors (see below), whose sum is σ = 6681448800. Its totient is φ = 6204860928.

The previous prime is 6441273413. The next prime is 6441273473. The reversal of 6441273427 is 7243721446.

It is not a de Polignac number, because 6441273427 - 2¹¹ = 6441271379 is a prime.

It is a super-2 number, since 2×6441273427² = 82980006722752648658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6441273427.

It is not an unprimeable number, because it can be changed into a prime (6441273407) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1856148 + ... + 1859614.

It is an arithmetic number, because the mean of its divisors is an integer number (417590550).

Almost surely, 2^6441273427 is an apocalyptic number.

6441273427 is a deficient number, since it is larger than the sum of its proper divisors (240175373).

6441273427 is a wasteful number, since it uses less digits than its factorization.

6441273427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990.

The product of its digits is 225792, while the sum is 40.

The square root of 6441273427 is about 80257.5443618854. The cubic root of 6441273427 is about 1860.6181152766.

The spelling of 6441273427 in words is "six billion, four hundred forty-one million, two hundred seventy-three thousand, four hundred twenty-seven".