123132511523450 has 96 divisors (see below), whose sum is σ = 276338120728320. Its totient is φ = 40214133331200.

The previous prime is 123132511523407. The next prime is 123132511523471. The reversal of 123132511523450 is 54325115231321.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232456130 + ... + 232985229.

It is an arithmetic number, because the mean of its divisors is an integer number (2878522090920).

Almost surely, 2^{123132511523450} is an apocalyptic number.

123132511523450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123132511523450 is an abundant number, since it is smaller than the sum of its proper divisors (153205609204870).

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

123132511523450 is a wasteful number, since it uses less digits than its factorization.

123132511523450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465441432 (or 465441427 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 123132511523450 its reverse (54325115231321), we get a palindrome (177457626754771).

The spelling of 123132511523450 in words is "one hundred twenty-three trillion, one hundred thirty-two billion, five hundred eleven million, five hundred twenty-three thousand, four hundred fifty".