161416653 has 4 divisors (see below), whose sum is σ = 215222208. Its totient is φ = 107611100.

The previous prime is 161416621. The next prime is 161416667. The reversal of 161416653 is 356614161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161416653 - 2⁵ = 161416621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161416603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26902773 + ... + 26902778.

It is an arithmetic number, because the mean of its divisors is an integer number (53805552).

Almost surely, 2^161416653 is an apocalyptic number.

It is an amenable number.

161416653 is a deficient number, since it is larger than the sum of its proper divisors (53805555).

161416653 is an equidigital number, since it uses as much as digits as its factorization.

161416653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53805554.

The product of its digits is 12960, while the sum is 33.

The square root of 161416653 is about 12704.9853600860. The cubic root of 161416653 is about 544.4810625825.

The spelling of 161416653 in words is "one hundred sixty-one million, four hundred sixteen thousand, six hundred fifty-three".