123238166688 has 240 divisors, whose sum is σ = 446080884480. Its totient is φ = 32502311424.

The previous prime is 123238166659. The next prime is 123238166707. The reversal of 123238166688 is 886661832321.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 25368 + ... + 497111.

It is an arithmetic number, because the mean of its divisors is an integer number (1858670352).

Almost surely, 2^123238166688 is an apocalyptic number.

123238166688 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 123238166688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223040442240).

123238166688 is an abundant number, since it is smaller than the sum of its proper divisors (322842717792).

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

123238166688 is a wasteful number, since it uses less digits than its factorization.

123238166688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522521 (or 522504 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 123238166688 in words is "one hundred twenty-three billion, two hundred thirty-eight million, one hundred sixty-six thousand, six hundred eighty-eight".