123424661943660 has 1152 divisors, whose sum is σ = 499468666798080. Its totient is φ = 22129873920000.

The previous prime is 123424661943659. The next prime is 123424661943697. The reversal of 123424661943660 is 66349166424321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 123424661943660.

It is an unprimeable number.

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 383 ways as a sum of consecutive naturals, for example, 508739385 + ... + 508981935.

It is an arithmetic number, because the mean of its divisors is an integer number (433566551040).

Almost surely, 2^{123424661943660} is an apocalyptic number.

123424661943660 is a gapful number since it is divisible by the number (10) 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 123424661943660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249734333399040).

123424661943660 is an abundant number, since it is smaller than the sum of its proper divisors (376044004854420).

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

123424661943660 is a wasteful number, since it uses less digits than its factorization.

123424661943660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242659 (or 242646 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 57.

The spelling of 123424661943660 in words is "one hundred twenty-three trillion, four hundred twenty-four billion, six hundred sixty-one million, nine hundred forty-three thousand, six hundred sixty".