123215164320 has 192 divisors, whose sum is σ = 402671001600. Its totient is φ = 31636915200.

The previous prime is 123215164307. The next prime is 123215164343. The reversal of 123215164320 is 23461512321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2940315 + ... + 2981925.

It is an arithmetic number, because the mean of its divisors is an integer number (2097244800).

Almost surely, 2^123215164320 is an apocalyptic number.

123215164320 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 123215164320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201335500800).

123215164320 is an abundant number, since it is smaller than the sum of its proper divisors (279455837280).

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

123215164320 is a wasteful number, since it uses less digits than its factorization.

123215164320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41859 (or 41851 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 123215164320 its reverse (23461512321), we get a palindrome (146676676641).

The spelling of 123215164320 in words is "one hundred twenty-three billion, two hundred fifteen million, one hundred sixty-four thousand, three hundred twenty".