123447939228432 has 480 divisors, whose sum is σ = 443886645436416. Its totient is φ = 31128831360000.

The previous prime is 123447939228407. The next prime is 123447939228433. The reversal of 123447939228432 is 234822939744321.

It is a happy number.

123447939228432 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 4 + 7 + 93 + 92 + 28 + 432 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 123447939228432.

It is not an unprimeable number, because it can be changed into a prime (123447939228433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 714514057 + ... + 714686807.

Almost surely, 2^{123447939228432} is an apocalyptic number.

123447939228432 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 123447939228432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221943322718208).

123447939228432 is an abundant number, since it is smaller than the sum of its proper divisors (320438706207984).

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

123447939228432 is a wasteful number, since it uses less digits than its factorization.

123447939228432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175179 (or 175170 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 63.

The spelling of 123447939228432 in words is "one hundred twenty-three trillion, four hundred forty-seven billion, nine hundred thirty-nine million, two hundred twenty-eight thousand, four hundred thirty-two".