6415445642 has 8 divisors (see below), whose sum is σ = 9624137796. Its totient is φ = 3207399712.

The previous prime is 6415445639. The next prime is 6415445677. The reversal of 6415445642 is 2465445146.

It can be written as a sum of positive squares in 2 ways, for example, as 6387366241 + 28079401 = 79921^2 + 5299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6415445642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135923 + ... + 176934.

Almost surely, 2^6415445642 is an apocalyptic number.

6415445642 is a deficient number, since it is larger than the sum of its proper divisors (3208692154).

6415445642 is a wasteful number, since it uses less digits than its factorization.

6415445642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323112.

The product of its digits is 460800, while the sum is 41.

The square root of 6415445642 is about 80096.4770885711. The cubic root of 6415445642 is about 1858.1279235076.

The spelling of 6415445642 in words is "six billion, four hundred fifteen million, four hundred forty-five thousand, six hundred forty-two".