123607989988 has 24 divisors (see below), whose sum is σ = 247364373312.
Its totient is φ = 52943054304.
The previous prime is 123607989929. The next prime is 123607990021. The reversal of 123607989988 is 889989706321.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277431 + ... + 1370782.
It is an arithmetic number, because the mean of its divisors is an integer number (10306848888).
Almost surely, 2123607989988 is an apocalyptic number.
It is an amenable number.
123607989988 is an abundant number, since it is smaller than the sum of its proper divisors (123756383324).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
123607989988 is a wasteful number, since it uses less digits than its factorization.
123607989988 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2649891 (or 2649889 counting only the distinct ones).
The product of its (nonzero) digits is 94058496, while the sum is 70.
The spelling of 123607989988 in words is "one hundred twenty-three billion, six hundred seven million, nine hundred eighty-nine thousand, nine hundred eighty-eight".