1605802805796 has 24 divisors (see below), whose sum is σ = 4282140815680. Its totient is φ = 458800801632.

The previous prime is 1605802805777. The next prime is 1605802805807. The reversal of 1605802805796 is 6975082085061.

It is a super-2 number, since 2×1605802805796² (a number of 25 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 9558349951 + ... + 9558350118.

Almost surely, 2^{1605802805796} is an apocalyptic number.

It is an amenable number.

1605802805796 is an abundant number, since it is smaller than the sum of its proper divisors (2676338009884).

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

1605802805796 is a wasteful number, since it uses less digits than its factorization.

1605802805796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19116700083 (or 19116700081 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 1605802805796 in words is "one trillion, six hundred five billion, eight hundred two million, eight hundred five thousand, seven hundred ninety-six".