2857073929985 has 16 divisors (see below), whose sum is σ = 3740809165632. Its totient is φ = 2077516584000.

The previous prime is 2857073929937. The next prime is 2857073930003. The reversal of 2857073929985 is 5899293707582.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2857073929985 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4117334 + ... + 4760943.

It is an arithmetic number, because the mean of its divisors is an integer number (233800572852).

Almost surely, 2^{2857073929985} is an apocalyptic number.

It is an amenable number.

2857073929985 is a deficient number, since it is larger than the sum of its proper divisors (883735235647).

2857073929985 is a wasteful number, since it uses less digits than its factorization.

2857073929985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8884144.

The product of its (nonzero) digits is 685843200, while the sum is 74.

The spelling of 2857073929985 in words is "two trillion, eight hundred fifty-seven billion, seventy-three million, nine hundred twenty-nine thousand, nine hundred eighty-five".