123351011355432 has 128 divisors (see below), whose sum is σ = 359457926204160. Its totient is φ = 34541895198720.

The previous prime is 123351011355419. The next prime is 123351011355437. The reversal of 123351011355432 is 234553110153321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123351011355437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1217182 + ... + 15753842.

It is an arithmetic number, because the mean of its divisors is an integer number (2808265048470).

Almost surely, 2^{123351011355432} is an apocalyptic number.

123351011355432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123351011355432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179728963102080).

123351011355432 is an abundant number, since it is smaller than the sum of its proper divisors (236106914848728).

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

123351011355432 is a wasteful number, since it uses less digits than its factorization.

123351011355432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14537683 (or 14537679 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 123351011355432 in words is "one hundred twenty-three trillion, three hundred fifty-one billion, eleven million, three hundred fifty-five thousand, four hundred thirty-two".