161326914240 has 112 divisors (see below), whose sum is σ = 512610628320. Its totient is φ = 42987110400.

The previous prime is 161326914209. The next prime is 161326914241. The reversal of 161326914240 is 42419623161.

161326914240 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 (161326914241) 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, 1184376 + ... + 1313544.

It is an arithmetic number, because the mean of its divisors is an integer number (4576880610).

Almost surely, 2^161326914240 is an apocalyptic number.

161326914240 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 161326914240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256305314160).

161326914240 is an abundant number, since it is smaller than the sum of its proper divisors (351283714080).

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

161326914240 is a wasteful number, since it uses less digits than its factorization.

161326914240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130490 (or 130480 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 161326914240 in words is "one hundred sixty-one billion, three hundred twenty-six million, nine hundred fourteen thousand, two hundred forty".