161447660244 has 192 divisors, whose sum is σ = 477154944000. Its totient is φ = 46797367680.

The previous prime is 161447660233. The next prime is 161447660273. The reversal of 161447660244 is 442066744161.

161447660244 is a `hidden beast` number, since 1 + 614 + 4 + 7 + 6 + 6 + 0 + 24 + 4 = 666.

161447660244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161447660244.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4758099 + ... + 4791909.

It is an arithmetic number, because the mean of its divisors is an integer number (2485182000).

Almost surely, 2^161447660244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161447660244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238577472000).

161447660244 is an abundant number, since it is smaller than the sum of its proper divisors (315707283756).

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

161447660244 is a wasteful number, since it uses less digits than its factorization.

161447660244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34035 (or 34027 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 161447660244 in words is "one hundred sixty-one billion, four hundred forty-seven million, six hundred sixty thousand, two hundred forty-four".