6665123448 has 64 divisors (see below), whose sum is σ = 19319212800. Its totient is φ = 2125110240.

The previous prime is 6665123441. The next prime is 6665123497. The reversal of 6665123448 is 8443215666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665123441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 665838 + ... + 675773.

It is an arithmetic number, because the mean of its divisors is an integer number (301862700).

Almost surely, 2^6665123448 is an apocalyptic number.

It is an amenable number.

6665123448 is an abundant number, since it is smaller than the sum of its proper divisors (12654089352).

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

6665123448 is a wasteful number, since it uses less digits than its factorization.

6665123448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341649 (or 1341639 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 6665123448 is about 81640.2073000798. The cubic root of 6665123448 is about 1881.9268241185.

The spelling of 6665123448 in words is "six billion, six hundred sixty-five million, one hundred twenty-three thousand, four hundred forty-eight".