161260145220032 has 224 divisors, whose sum is σ = 346410804418560. Its totient is φ = 74210411233280.

The previous prime is 161260145220017. The next prime is 161260145220071. The reversal of 161260145220032 is 230022541062161.

It is a junction number, because it is equal to n+sod(n) for n = 161260145219974 and 161260145220001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3604281182 + ... + 3604325922.

It is an arithmetic number, because the mean of its divisors is an integer number (1546476805440).

Almost surely, 2^{161260145220032} 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 161260145220032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173205402209280).

161260145220032 is an abundant number, since it is smaller than the sum of its proper divisors (185150659198528).

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

161260145220032 is a wasteful number, since it uses less digits than its factorization.

161260145220032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45259 (or 45249 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 161260145220032 its reverse (230022541062161), we get a palindrome (391282686282193).

The spelling of 161260145220032 in words is "one hundred sixty-one trillion, two hundred sixty billion, one hundred forty-five million, two hundred twenty thousand, thirty-two".