6445301272 has 16 divisors (see below), whose sum is σ = 12501662400. Its totient is φ = 3111524640.

The previous prime is 6445301257. The next prime is 6445301279. The reversal of 6445301272 is 2721035446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445301279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13890504 + ... + 13890967.

It is an arithmetic number, because the mean of its divisors is an integer number (781353900).

Almost surely, 2^6445301272 is an apocalyptic number.

It is an amenable number.

6445301272 is a deficient number, since it is larger than the sum of its proper divisors (6056361128).

6445301272 is a wasteful number, since it uses less digits than its factorization.

6445301272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27781506 (or 27781502 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 6445301272 is about 80282.6336887374. The cubic root of 6445301272 is about 1861.0058605414.

The spelling of 6445301272 in words is "six billion, four hundred forty-five million, three hundred one thousand, two hundred seventy-two".