123388957692 has 1152 divisors, whose sum is σ = 469807923200. Its totient is φ = 27159390720.

The previous prime is 123388957669. The next prime is 123388957717. The reversal of 123388957692 is 296759883321.

123388957692 is a `hidden beast` number, since 1 + 23 + 38 + 8 + 9 + 576 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 971566533 + ... + 971566659.

Almost surely, 2^123388957692 is an apocalyptic number.

123388957692 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 123388957692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234903961600).

123388957692 is an abundant number, since it is smaller than the sum of its proper divisors (346418965508).

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

123388957692 is a wasteful number, since it uses less digits than its factorization.

123388957692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 225 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 123388957692 in words is "one hundred twenty-three billion, three hundred eighty-eight million, nine hundred fifty-seven thousand, six hundred ninety-two".