123639607104 has 112 divisors (see below), whose sum is σ = 357120090432. Its totient is φ = 37521764352.

The previous prime is 123639607103. The next prime is 123639607121. The reversal of 123639607104 is 401706936321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123639607103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157074 + ... + 521489.

It is an arithmetic number, because the mean of its divisors is an integer number (3188572236).

Almost surely, 2^123639607104 is an apocalyptic number.

It is an amenable number.

123639607104 is an abundant number, since it is smaller than the sum of its proper divisors (233480483328).

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

123639607104 is a wasteful number, since it uses less digits than its factorization.

123639607104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678664 (or 678654 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The spelling of 123639607104 in words is "one hundred twenty-three billion, six hundred thirty-nine million, six hundred seven thousand, one hundred four".