161227611 has 32 divisors (see below), whose sum is σ = 246848000. Its totient is φ = 103926240.

The previous prime is 161227603. The next prime is 161227639. The reversal of 161227611 is 116722161.

It is a happy number.

161227611 is a `hidden beast` number, since 16 + 12 + 27 + 611 = 666.

161227611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161227611 - 2³ = 161227603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161227601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198396 + ... + 199206.

It is an arithmetic number, because the mean of its divisors is an integer number (7714000).

Almost surely, 2^161227611 is an apocalyptic number.

161227611 is a deficient number, since it is larger than the sum of its proper divisors (85620389).

161227611 is a wasteful number, since it uses less digits than its factorization.

161227611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1050 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 161227611 is about 12697.5435025835. The cubic root of 161227611 is about 544.2684244705.

Adding to 161227611 its reverse (116722161), we get a palindrome (277949772).

The spelling of 161227611 in words is "one hundred sixty-one million, two hundred twenty-seven thousand, six hundred eleven".