16319161242 has 96 divisors (see below), whose sum is σ = 37253296080. Its totient is φ = 5155799040.

The previous prime is 16319161241. The next prime is 16319161249. The reversal of 16319161242 is 24216191361.

It is a happy number.

16319161242 is a `hidden beast` number, since 1 + 6 + 31 + 9 + 1 + 612 + 4 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 11058415281 + 5260745961 = 105159^2 + 72531^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16319161197 and 16319161206.

It is not an unprimeable number, because it can be changed into a prime (16319161241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9182658 + ... + 9184434.

Almost surely, 2^16319161242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16319161242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18626648040).

16319161242 is an abundant number, since it is smaller than the sum of its proper divisors (20934134838).

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

16319161242 is a wasteful number, since it uses less digits than its factorization.

16319161242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128 (or 2125 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The spelling of 16319161242 in words is "sixteen billion, three hundred nineteen million, one hundred sixty-one thousand, two hundred forty-two".