6644481151 has 16 divisors (see below), whose sum is σ = 8302521600. Its totient is φ = 5165959680.

The previous prime is 6644481149. The next prime is 6644481163. The reversal of 6644481151 is 1511844466.

It is not a de Polignac number, because 6644481151 - 2¹ = 6644481149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644481121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61521 + ... + 130666.

It is an arithmetic number, because the mean of its divisors is an integer number (518907600).

Almost surely, 2^6644481151 is an apocalyptic number.

6644481151 is a deficient number, since it is larger than the sum of its proper divisors (1658040449).

6644481151 is a wasteful number, since it uses less digits than its factorization.

6644481151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192654.

The product of its digits is 92160, while the sum is 40.

The square root of 6644481151 is about 81513.6868936745. The cubic root of 6644481151 is about 1879.9820006387.

The spelling of 6644481151 in words is "six billion, six hundred forty-four million, four hundred eighty-one thousand, one hundred fifty-one".