123989656048 has 20 divisors (see below), whose sum is σ = 240241976208. Its totient is φ = 61991726720.

The previous prime is 123989656001. The next prime is 123989656079. The reversal of 123989656048 is 840656989321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155028 + ... + 521548.

Almost surely, 2^123989656048 is an apocalyptic number.

It is an amenable number.

123989656048 is a deficient number, since it is larger than the sum of its proper divisors (116252320160).

123989656048 is a wasteful number, since it uses less digits than its factorization.

123989656048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387672 (or 387666 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 61.

The spelling of 123989656048 in words is "one hundred twenty-three billion, nine hundred eighty-nine million, six hundred fifty-six thousand, forty-eight".