161783133852 has 24 divisors (see below), whose sum is σ = 377859442576. Its totient is φ = 53875502208.

The previous prime is 161783133851. The next prime is 161783133859. The reversal of 161783133852 is 258331387161.

161783133852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161783133851) by changing a digit.

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, 6513223 + ... + 6538014.

Almost surely, 2^161783133852 is an apocalyptic number.

161783133852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161783133852 is an abundant number, since it is smaller than the sum of its proper divisors (216076308724).

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

161783133852 is a wasteful number, since it uses less digits than its factorization.

161783133852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13052277 (or 13052275 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The spelling of 161783133852 in words is "one hundred sixty-one billion, seven hundred eighty-three million, one hundred thirty-three thousand, eight hundred fifty-two".