123863890122 has 128 divisors (see below), whose sum is σ = 324237012480. Its totient is φ = 34309578240.

The previous prime is 123863890091. The next prime is 123863890141. The reversal of 123863890122 is 221098368321.

123863890122 is a `hidden beast` number, since 1 + 2 + 3 + 8 + 638 + 9 + 0 + 1 + 2 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3914308 + ... + 3945824.

It is an arithmetic number, because the mean of its divisors is an integer number (2533101660).

Almost surely, 2^123863890122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123863890122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162118506240).

123863890122 is an abundant number, since it is smaller than the sum of its proper divisors (200373122358).

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

123863890122 is a wasteful number, since it uses less digits than its factorization.

123863890122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31853 (or 31847 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 123863890122 in words is "one hundred twenty-three billion, eight hundred sixty-three million, eight hundred ninety thousand, one hundred twenty-two".