123671245824 has 880 divisors, whose sum is σ = 451352691840. Its totient is φ = 33798352896.

The previous prime is 123671245813. The next prime is 123671245871. The reversal of 123671245824 is 428542176321.

123671245824 is a `hidden beast` number, since 1 + 2 + 3 + 67 + 1 + 2 + 4 + 582 + 4 = 666.

Its product of digits (645120) is a multiple of the sum of its prime divisors (35).

It is a self number, because there is not a number n which added to its sum of digits gives 123671245824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5377010677 + ... + 5377010699.

Almost surely, 2^123671245824 is an apocalyptic number.

123671245824 is a gapful number since it is divisible by the number (14) 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 123671245824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225676345920).

123671245824 is an abundant number, since it is smaller than the sum of its proper divisors (327681446016).

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

123671245824 is an frugal number, since it uses more digits than its factorization.

123671245824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 35 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 123671245824 in words is "one hundred twenty-three billion, six hundred seventy-one million, two hundred forty-five thousand, eight hundred twenty-four".