166023516103 has 4 divisors (see below), whose sum is σ = 166030580248. Its totient is φ = 166016451960.

The previous prime is 166023516049. The next prime is 166023516107. The reversal of 166023516103 is 301615320661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301615320661 = 59 ⋅5112124079.

It is a cyclic number.

It is not a de Polignac number, because 166023516103 - 2²¹ = 166021418951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166023516107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3496701 + ... + 3543862.

It is an arithmetic number, because the mean of its divisors is an integer number (41507645062).

Almost surely, 2^166023516103 is an apocalyptic number.

166023516103 is a deficient number, since it is larger than the sum of its proper divisors (7064145).

166023516103 is an equidigital number, since it uses as much as digits as its factorization.

166023516103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7064144.

The product of its (nonzero) digits is 19440, while the sum is 34.

Adding to 166023516103 its reverse (301615320661), we get a palindrome (467638836764).

The spelling of 166023516103 in words is "one hundred sixty-six billion, twenty-three million, five hundred sixteen thousand, one hundred three".