123355348950912 has 256 divisors, whose sum is σ = 368232008256000. Its totient is φ = 36303036751872.

The previous prime is 123355348950901. The next prime is 123355348950943. The reversal of 123355348950912 is 219059843553321.

It is a super-2 number, since 2×123355348950912² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 3639535438 + ... + 3639569330.

It is an arithmetic number, because the mean of its divisors is an integer number (1438406282250).

Almost surely, 2^{123355348950912} is an apocalyptic number.

123355348950912 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 123355348950912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184116004128000).

123355348950912 is an abundant number, since it is smaller than the sum of its proper divisors (244876659305088).

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

123355348950912 is a wasteful number, since it uses less digits than its factorization.

123355348950912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65645 (or 65633 counting only the distinct ones).

The product of its (nonzero) digits is 34992000, while the sum is 60.

The spelling of 123355348950912 in words is "one hundred twenty-three trillion, three hundred fifty-five billion, three hundred forty-eight million, nine hundred fifty thousand, nine hundred twelve".