161227716 has 48 divisors (see below), whose sum is σ = 405936384. Its totient is φ = 49510656.

The previous prime is 161227699. The next prime is 161227747. The reversal of 161227716 is 617722161.

161227716 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145621 + ... + 146723.

It is an arithmetic number, because the mean of its divisors is an integer number (8457008).

Almost surely, 2^161227716 is an apocalyptic number.

It is an amenable number.

161227716 is an abundant number, since it is smaller than the sum of its proper divisors (244708668).

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

161227716 is a wasteful number, since it uses less digits than its factorization.

161227716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060 (or 2058 counting only the distinct ones).

The product of its digits is 7056, while the sum is 33.

The square root of 161227716 is about 12697.5476372408. The cubic root of 161227716 is about 544.2685426226.

Adding to 161227716 its reverse (617722161), we get a palindrome (778949877).

The spelling of 161227716 in words is "one hundred sixty-one million, two hundred twenty-seven thousand, seven hundred sixteen".