123133643452 has 12 divisors (see below), whose sum is σ = 215843619600. Its totient is φ = 61464037856.

The previous prime is 123133643441. The next prime is 123133643473. The reversal of 123133643452 is 254346331321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25693273 + ... + 25698064.

It is an arithmetic number, because the mean of its divisors is an integer number (17986968300).

Almost surely, 2^123133643452 is an apocalyptic number.

It is an amenable number.

123133643452 is a deficient number, since it is larger than the sum of its proper divisors (92709976148).

123133643452 is a wasteful number, since it uses less digits than its factorization.

123133643452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51391940 (or 51391938 counting only the distinct ones).

The product of its digits is 155520, while the sum is 37.

Adding to 123133643452 its reverse (254346331321), we get a palindrome (377479974773).

The spelling of 123133643452 in words is "one hundred twenty-three billion, one hundred thirty-three million, six hundred forty-three thousand, four hundred fifty-two".