161342597332 has 72 divisors (see below), whose sum is σ = 335531290248. Its totient is φ = 67667040000.

The previous prime is 161342597327. The next prime is 161342597371. The reversal of 161342597332 is 233795243161.

It can be written as a sum of positive squares in 4 ways, for example, as 1537737796 + 159804859536 = 39214^2 + 399756^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2321082 + ... + 2389582.

It is an arithmetic number, because the mean of its divisors is an integer number (4660156809).

Almost surely, 2^161342597332 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 161342597332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167765645124).

161342597332 is an abundant number, since it is smaller than the sum of its proper divisors (174188692916).

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

161342597332 is a wasteful number, since it uses less digits than its factorization.

161342597332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68777 (or 68768 counting only the distinct ones).

The product of its digits is 816480, while the sum is 46.

The spelling of 161342597332 in words is "one hundred sixty-one billion, three hundred forty-two million, five hundred ninety-seven thousand, three hundred thirty-two".