1605999202842 has 8 divisors (see below), whose sum is σ = 3211998405696. Its totient is φ = 535333067612.

The previous prime is 1605999202823. The next prime is 1605999202859. The reversal of 1605999202842 is 2482029995061.

It is a happy number.

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

1605999202842 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 133833266898 + ... + 133833266909.

It is an arithmetic number, because the mean of its divisors is an integer number (401499800712).

Almost surely, 2^{1605999202842} is an apocalyptic number.

1605999202842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1605999202842 is a wasteful number, since it uses less digits than its factorization.

1605999202842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267666533812.

The product of its (nonzero) digits is 5598720, while the sum is 57.

The spelling of 1605999202842 in words is "one trillion, six hundred five billion, nine hundred ninety-nine million, two hundred two thousand, eight hundred forty-two".