2855407665 has 16 divisors (see below), whose sum is σ = 4983984576. Its totient is φ = 1384440000.

The previous prime is 2855407651. The next prime is 2855407699. The reversal of 2855407665 is 5667045582.

It is a happy number.

It is not a de Polignac number, because 2855407665 - 2⁷ = 2855407537 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 8652586 + ... + 8652915.

It is an arithmetic number, because the mean of its divisors is an integer number (311499036).

Almost surely, 2^2855407665 is an apocalyptic number.

It is an amenable number.

2855407665 is a deficient number, since it is larger than the sum of its proper divisors (2128576911).

2855407665 is a wasteful number, since it uses less digits than its factorization.

2855407665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17305520.

The product of its (nonzero) digits is 2016000, while the sum is 48.

The square root of 2855407665 is about 53436.0146811118. The cubic root of 2855407665 is about 1418.6960960974.

The spelling of 2855407665 in words is "two billion, eight hundred fifty-five million, four hundred seven thousand, six hundred sixty-five".