123863255040 has 192 divisors, whose sum is σ = 452875812480. Its totient is φ = 28311552000.

The previous prime is 123863255029. The next prime is 123863255101. The reversal of 123863255040 is 40552368321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 123863255040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72961 + ... + 503040.

It is an arithmetic number, because the mean of its divisors is an integer number (2358728190).

Almost surely, 2^123863255040 is an apocalyptic number.

123863255040 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 123863255040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226437906240).

123863255040 is an abundant number, since it is smaller than the sum of its proper divisors (329012557440).

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

123863255040 is an equidigital number, since it uses as much as digits as its factorization.

123863255040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576038 (or 576018 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 123863255040 in words is "one hundred twenty-three billion, eight hundred sixty-three million, two hundred fifty-five thousand, forty".