6445356612 has 24 divisors (see below), whose sum is σ = 15188070912. Its totient is φ = 2127180000.

The previous prime is 6445356607. The next prime is 6445356649. The reversal of 6445356612 is 2166535446.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2657764 + ... + 2660187.

It is an arithmetic number, because the mean of its divisors is an integer number (632836288).

Almost surely, 2^6445356612 is an apocalyptic number.

It is an amenable number.

6445356612 is an abundant number, since it is smaller than the sum of its proper divisors (8742714300).

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

6445356612 is a wasteful number, since it uses less digits than its factorization.

6445356612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5318059 (or 5318057 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 6445356612 is about 80282.9783453504. The cubic root of 6445356612 is about 1861.0111867868.

The spelling of 6445356612 in words is "six billion, four hundred forty-five million, three hundred fifty-six thousand, six hundred twelve".