161114505 has 16 divisors (see below), whose sum is σ = 257981760. Its totient is φ = 85861568.

The previous prime is 161114489. The next prime is 161114519. The reversal of 161114505 is 505411161.

It is a cyclic number.

It is not a de Polignac number, because 161114505 - 2⁴ = 161114489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20866 + ... + 27524.

It is an arithmetic number, because the mean of its divisors is an integer number (16123860).

Almost surely, 2^161114505 is an apocalyptic number.

161114505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161114505 is a deficient number, since it is larger than the sum of its proper divisors (96867255).

161114505 is a wasteful number, since it uses less digits than its factorization.

161114505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 161114505 is about 12693.0888675688. The cubic root of 161114505 is about 544.1411211609.

Adding to 161114505 its reverse (505411161), we get a palindrome (666525666).

The spelling of 161114505 in words is "one hundred sixty-one million, one hundred fourteen thousand, five hundred five".