123638607048 has 128 divisors (see below), whose sum is σ = 346078656000. Its totient is φ = 36491896320.

The previous prime is 123638607031. The next prime is 123638607073. The reversal of 123638607048 is 840706836321.

It is a junction number, because it is equal to n+sod(n) for n = 123638606988 and 123638607006.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1534963 + ... + 1613501.

It is an arithmetic number, because the mean of its divisors is an integer number (2703739500).

Almost surely, 2^123638607048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123638607048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173039328000).

123638607048 is an abundant number, since it is smaller than the sum of its proper divisors (222440048952).

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

123638607048 is a wasteful number, since it uses less digits than its factorization.

123638607048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78715 (or 78711 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 123638607048 in words is "one hundred twenty-three billion, six hundred thirty-eight million, six hundred seven thousand, forty-eight".