161016516 has 36 divisors (see below), whose sum is σ = 407530032. Its totient is φ = 53604144.

The previous prime is 161016509. The next prime is 161016521. The reversal of 161016516 is 615610161.

161016516 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 1 + 651 + 6 = 666.

161016516 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

161016516 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 161016516.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31731 + ... + 36453.

Almost surely, 2^161016516 is an apocalyptic number.

It is an amenable number.

161016516 is an abundant number, since it is smaller than the sum of its proper divisors (246513516).

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

161016516 is a wasteful number, since it uses less digits than its factorization.

161016516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680 (or 5675 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 161016516 is about 12689.2283453329. The cubic root of 161016516 is about 544.0307841936.

Adding to 161016516 its reverse (615610161), we get a palindrome (776626677).

The spelling of 161016516 in words is "one hundred sixty-one million, sixteen thousand, five hundred sixteen".