161771016 has 64 divisors (see below), whose sum is σ = 464428800. Its totient is φ = 46440000.

The previous prime is 161771003. The next prime is 161771017. The reversal of 161771016 is 610177161.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161771017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11110 + ... + 21141.

It is an arithmetic number, because the mean of its divisors is an integer number (7256700).

Almost surely, 2^161771016 is an apocalyptic number.

It is an amenable number.

161771016 is an abundant number, since it is smaller than the sum of its proper divisors (302657784).

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

161771016 is a wasteful number, since it uses less digits than its factorization.

161771016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32290 (or 32286 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 30.

The square root of 161771016 is about 12718.9235393566. The cubic root of 161771016 is about 544.8792101078.

It can be divided in two parts, 161 and 771016, that added together give a palindrome (771177).

The spelling of 161771016 in words is "one hundred sixty-one million, seven hundred seventy-one thousand, sixteen".