161516010012 has 24 divisors (see below), whose sum is σ = 430709360256. Its totient is φ = 46147431408.

The previous prime is 161516009987. The next prime is 161516010017. The reversal of 161516010012 is 210010615161.

161516010012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161516010017) 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 7 ways as a sum of consecutive naturals, for example, 961404738 + ... + 961404905.

It is an arithmetic number, because the mean of its divisors is an integer number (17946223344).

Almost surely, 2^161516010012 is an apocalyptic number.

161516010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161516010012 is an abundant number, since it is smaller than the sum of its proper divisors (269193350244).

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

161516010012 is a wasteful number, since it uses less digits than its factorization.

161516010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922809657 (or 1922809655 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

Adding to 161516010012 its reverse (210010615161), we get a palindrome (371526625173).

The spelling of 161516010012 in words is "one hundred sixty-one billion, five hundred sixteen million, ten thousand, twelve".