6415812745 has 16 divisors (see below), whose sum is σ = 8134344000. Its totient is φ = 4844415168.

The previous prime is 6415812727. The next prime is 6415812817. The reversal of 6415812745 is 5472185146.

It is a cyclic number.

It is not a de Polignac number, because 6415812745 - 2²³ = 6407424137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99975 + ... + 151084.

It is an arithmetic number, because the mean of its divisors is an integer number (508396500).

Almost surely, 2^6415812745 is an apocalyptic number.

It is an amenable number.

6415812745 is a deficient number, since it is larger than the sum of its proper divisors (1718531255).

6415812745 is a wasteful number, since it uses less digits than its factorization.

6415812745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251352.

The product of its digits is 268800, while the sum is 43.

The square root of 6415812745 is about 80098.7686859168. The cubic root of 6415812745 is about 1858.1633646062.

The spelling of 6415812745 in words is "six billion, four hundred fifteen million, eight hundred twelve thousand, seven hundred forty-five".