123353202032145 has 24 divisors (see below), whose sum is σ = 213828380274600. Its totient is φ = 65783401057536.

The previous prime is 123353202032111. The next prime is 123353202032149. The reversal of 123353202032145 is 541230202353321.

123353202032145 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 5 + 320 + 2 + 0 + 321 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 58040490901761 + 65312711130384 = 7618431^2 + 8081628^2 .

It is not a de Polignac number, because 123353202032145 - 2⁷ = 123353202032017 is a prime.

It is a super-2 number, since 2×123353202032145² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123353202032149) 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 23 ways as a sum of consecutive naturals, for example, 103009740 + ... + 104200349.

It is an arithmetic number, because the mean of its divisors is an integer number (8909515844775).

Almost surely, 2^{123353202032145} is an apocalyptic number.

123353202032145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123353202032145 is a deficient number, since it is larger than the sum of its proper divisors (90475178242455).

123353202032145 is a wasteful number, since it uses less digits than its factorization.

123353202032145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207223329 (or 207223326 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 123353202032145 its reverse (541230202353321), we get a palindrome (664583404385466).

The spelling of 123353202032145 in words is "one hundred twenty-three trillion, three hundred fifty-three billion, two hundred two million, thirty-two thousand, one hundred forty-five".