6444027157 has 32 divisors (see below), whose sum is σ = 7183313280. Its totient is φ = 5753180160.

The previous prime is 6444027091. The next prime is 6444027173. The reversal of 6444027157 is 7517204446.

It is a cyclic number.

It is not a de Polignac number, because 6444027157 - 2¹¹ = 6444025109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444027857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7297438 + ... + 7298320.

It is an arithmetic number, because the mean of its divisors is an integer number (224478540).

Almost surely, 2^6444027157 is an apocalyptic number.

It is an amenable number.

6444027157 is a deficient number, since it is larger than the sum of its proper divisors (739286123).

6444027157 is a wasteful number, since it uses less digits than its factorization.

6444027157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173.

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 6444027157 is about 80274.6981121698. The cubic root of 6444027157 is about 1860.8832238255.

The spelling of 6444027157 in words is "six billion, four hundred forty-four million, twenty-seven thousand, one hundred fifty-seven".