161016423 has 8 divisors (see below), whose sum is σ = 216327936. Its totient is φ = 106524600.

The previous prime is 161016419. The next prime is 161016433. The reversal of 161016423 is 324610161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161016423 - 2² = 161016419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161016393 and 161016402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161016413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204463 + ... + 205248.

It is an arithmetic number, because the mean of its divisors is an integer number (27040992).

Almost surely, 2^161016423 is an apocalyptic number.

161016423 is a deficient number, since it is larger than the sum of its proper divisors (55311513).

161016423 is a wasteful number, since it uses less digits than its factorization.

161016423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409845.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 161016423 is about 12689.2246808069. The cubic root of 161016423 is about 544.0306794531.

Adding to 161016423 its reverse (324610161), we get a palindrome (485626584).

The spelling of 161016423 in words is "one hundred sixty-one million, sixteen thousand, four hundred twenty-three".