161560611016 has 64 divisors (see below), whose sum is σ = 369654912000. Its totient is φ = 64689565248.

The previous prime is 161560611011. The next prime is 161560611053. The reversal of 161560611016 is 610116065161.

It is a super-2 number, since 2×161560611016² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161560611011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1403166 + ... + 1513933.

It is an arithmetic number, because the mean of its divisors is an integer number (5775858000).

Almost surely, 2^161560611016 is an apocalyptic number.

It is an amenable number.

161560611016 is an abundant number, since it is smaller than the sum of its proper divisors (208094300984).

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

161560611016 is a wasteful number, since it uses less digits than its factorization.

161560611016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917178 (or 2917174 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

Adding to 161560611016 its reverse (610116065161), we get a palindrome (771676676177).

The spelling of 161560611016 in words is "one hundred sixty-one billion, five hundred sixty million, six hundred eleven thousand, sixteen".