161232536661036 has 48 divisors (see below), whose sum is σ = 389185588646400. Its totient is φ = 51890450859072.

The previous prime is 161232536660963. The next prime is 161232536661037. The reversal of 161232536661036 is 630166635232161.

It is a self number, because there is not a number n which added to its sum of digits gives 161232536661036.

It is not an unprimeable number, because it can be changed into a prime (161232536661037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36490755 + ... + 40669893.

It is an arithmetic number, because the mean of its divisors is an integer number (8108033096800).

Almost surely, 2^{161232536661036} is an apocalyptic number.

It is an amenable number.

161232536661036 is an abundant number, since it is smaller than the sum of its proper divisors (227953051985364).

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

161232536661036 is a wasteful number, since it uses less digits than its factorization.

161232536661036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290038 (or 4290036 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 51.

The spelling of 161232536661036 in words is "one hundred sixty-one trillion, two hundred thirty-two billion, five hundred thirty-six million, six hundred sixty-one thousand, thirty-six".