161835409596 has 192 divisors, whose sum is σ = 445731471360. Its totient is φ = 44749013760.

The previous prime is 161835409591. The next prime is 161835409613. The reversal of 161835409596 is 695904538161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161835409591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 163304661 + ... + 163305651.

It is an arithmetic number, because the mean of its divisors is an integer number (2321518080).

Almost surely, 2^161835409596 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161835409596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222865735680).

161835409596 is an abundant number, since it is smaller than the sum of its proper divisors (283896061764).

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

161835409596 is a wasteful number, since it uses less digits than its factorization.

161835409596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 57.

The spelling of 161835409596 in words is "one hundred sixty-one billion, eight hundred thirty-five million, four hundred nine thousand, five hundred ninety-six".