6445204268 has 24 divisors (see below), whose sum is σ = 11360139840. Its totient is φ = 3199502720.

The previous prime is 6445204243. The next prime is 6445204273. The reversal of 6445204268 is 8624025446.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520493 + ... + 532731.

It is an arithmetic number, because the mean of its divisors is an integer number (473339160).

Almost surely, 2^6445204268 is an apocalyptic number.

It is an amenable number.

6445204268 is a deficient number, since it is larger than the sum of its proper divisors (4914935572).

6445204268 is a wasteful number, since it uses less digits than its factorization.

6445204268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13177 (or 13175 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 41.

The square root of 6445204268 is about 80282.0295458454. The cubic root of 6445204268 is about 1860.9965242352.

The spelling of 6445204268 in words is "six billion, four hundred forty-five million, two hundred four thousand, two hundred sixty-eight".