161354533530 has 32 divisors (see below), whose sum is σ = 407632507200. Its totient is φ = 40763250432.

The previous prime is 161354533513. The next prime is 161354533531. The reversal of 161354533530 is 35335453161.

161354533530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161354533531) 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 15 ways as a sum of consecutive naturals, for example, 141538495 + ... + 141539634.

It is an arithmetic number, because the mean of its divisors is an integer number (12738515850).

Almost surely, 2^161354533530 is an apocalyptic number.

161354533530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161354533530 is an abundant number, since it is smaller than the sum of its proper divisors (246277973670).

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

161354533530 is a wasteful number, since it uses less digits than its factorization.

161354533530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283078158.

The product of its (nonzero) digits is 243000, while the sum is 39.

Adding to 161354533530 its reverse (35335453161), we get a palindrome (196689986691).

The spelling of 161354533530 in words is "one hundred sixty-one billion, three hundred fifty-four million, five hundred thirty-three thousand, five hundred thirty".