161516835036 has 36 divisors (see below), whose sum is σ = 412242546352. Its totient is φ = 53316235584.

The previous prime is 161516835031. The next prime is 161516835043. The reversal of 161516835036 is 630538615161.

161516835036 is a `hidden beast` number, since 1 + 6 + 1 + 516 + 83 + 50 + 3 + 6 = 666.

161516835036 is digitally balanced in base 2, because in such base 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).

It is a junction number, because it is equal to n+sod(n) for n = 161516834982 and 161516835000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161516835031) 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 11 ways as a sum of consecutive naturals, for example, 21775801 + ... + 21783216.

Almost surely, 2^161516835036 is an apocalyptic number.

It is an amenable number.

161516835036 is an abundant number, since it is smaller than the sum of its proper divisors (250725711316).

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

161516835036 is a wasteful number, since it uses less digits than its factorization.

161516835036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43559130 (or 43559125 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 161516835036 in words is "one hundred sixty-one billion, five hundred sixteen million, eight hundred thirty-five thousand, thirty-six".