123681123225660 has 384 divisors, whose sum is σ = 464993837457408. Its totient is φ = 23721929856000.

The previous prime is 123681123225619. The next prime is 123681123225679. The reversal of 123681123225660 is 66522321186321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1860085015 + ... + 1860151505.

It is an arithmetic number, because the mean of its divisors is an integer number (1210921451712).

Almost surely, 2^{123681123225660} is an apocalyptic number.

123681123225660 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 123681123225660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232496918728704).

123681123225660 is an abundant number, since it is smaller than the sum of its proper divisors (341312714231748).

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

123681123225660 is a wasteful number, since it uses less digits than its factorization.

123681123225660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97505 (or 97503 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 123681123225660 in words is "one hundred twenty-three trillion, six hundred eighty-one billion, one hundred twenty-three million, two hundred twenty-five thousand, six hundred sixty".