123253212991068 has 144 divisors (see below), whose sum is σ = 330037745157120. Its totient is φ = 40202043280704.

The previous prime is 123253212991037. The next prime is 123253212991081. The reversal of 123253212991068 is 860199212352321.

123253212991068 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 532 + 1 + 2 + 99 + 10 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 225085713 + ... + 225632631.

Almost surely, 2^{123253212991068} is an apocalyptic number.

123253212991068 is a gapful number since it is divisible by the number (18) 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 123253212991068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165018872578560).

123253212991068 is an abundant number, since it is smaller than the sum of its proper divisors (206784532166052).

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

123253212991068 is a wasteful number, since it uses less digits than its factorization.

123253212991068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551918 (or 551904 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 123253212991068 in words is "one hundred twenty-three trillion, two hundred fifty-three billion, two hundred twelve million, nine hundred ninety-one thousand, sixty-eight".