165123345403236 has 96 divisors (see below), whose sum is σ = 442620661593600. Its totient is φ = 47384020120320.

The previous prime is 165123345403207. The next prime is 165123345403301. The reversal of 165123345403236 is 632304543321561.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7754866 + ... + 19758153.

It is an arithmetic number, because the mean of its divisors is an integer number (4610631891600).

Almost surely, 2^{165123345403236} is an apocalyptic number.

It is an amenable number.

165123345403236 is an abundant number, since it is smaller than the sum of its proper divisors (277497316190364).

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

165123345403236 is a wasteful number, since it uses less digits than its factorization.

165123345403236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27515449 (or 27515447 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 48.

Adding to 165123345403236 its reverse (632304543321561), we get a palindrome (797427888724797).

The spelling of 165123345403236 in words is "one hundred sixty-five trillion, one hundred twenty-three billion, three hundred forty-five million, four hundred three thousand, two hundred thirty-six".