6444464268 has 24 divisors (see below), whose sum is σ = 16404091200. Its totient is φ = 1952867920.

The previous prime is 6444464249. The next prime is 6444464269. The reversal of 6444464268 is 8624644446.

It is a super-2 number, since 2×6444464268² = 83062239403057551648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6444464269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24410718 + ... + 24410981.

It is an arithmetic number, because the mean of its divisors is an integer number (683503800).

Almost surely, 2^6444464268 is an apocalyptic number.

It is an amenable number.

6444464268 is an abundant number, since it is smaller than the sum of its proper divisors (9959626932).

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

6444464268 is a wasteful number, since it uses less digits than its factorization.

6444464268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48821717 (or 48821715 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 48.

The square root of 6444464268 is about 80277.4206611050. The cubic root of 6444464268 is about 1860.9252986604.

The spelling of 6444464268 in words is "six billion, four hundred forty-four million, four hundred sixty-four thousand, two hundred sixty-eight".