161102809283280 has 160 divisors (see below), whose sum is σ = 502248081029760. Its totient is φ = 42717399889920.

The previous prime is 161102809283261. The next prime is 161102809283333. The reversal of 161102809283280 is 82382908201161.

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, 574707634 + ... + 574987886.

It is an arithmetic number, because the mean of its divisors is an integer number (3139050506436).

Almost surely, 2^{161102809283280} is an apocalyptic number.

161102809283280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161102809283280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251124040514880).

161102809283280 is an abundant number, since it is smaller than the sum of its proper divisors (341145271746480).

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

161102809283280 is a wasteful number, since it uses less digits than its factorization.

161102809283280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293829 (or 293823 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 161102809283280 in words is "one hundred sixty-one trillion, one hundred two billion, eight hundred nine million, two hundred eighty-three thousand, two hundred eighty".