6445072612 has 24 divisors (see below), whose sum is σ = 12951822240. Its totient is φ = 2775389760.

The previous prime is 6445072519. The next prime is 6445072643. The reversal of 6445072612 is 2162705446.

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, 3853873 + ... + 3855544.

It is an arithmetic number, because the mean of its divisors is an integer number (539659260).

Almost surely, 2^6445072612 is an apocalyptic number.

It is an amenable number.

6445072612 is an abundant number, since it is smaller than the sum of its proper divisors (6506749628).

6445072612 is a wasteful number, since it uses less digits than its factorization.

6445072612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709451 (or 7709449 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 6445072612 is about 80281.2095823176. The cubic root of 6445072612 is about 1860.9838526417.

The spelling of 6445072612 in words is "six billion, four hundred forty-five million, seventy-two thousand, six hundred twelve".