318646136128 has 56 divisors (see below), whose sum is σ = 650101824000. Its totient is φ = 154886466048.

The previous prime is 318646136117. The next prime is 318646136141. The reversal of 318646136128 is 821631646813.

It is a congruent number.

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, 92713 + ... + 803671.

Almost surely, 2^318646136128 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 318646136128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325050912000).

318646136128 is an abundant number, since it is smaller than the sum of its proper divisors (331455687872).

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

318646136128 is a wasteful number, since it uses less digits than its factorization.

318646136128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711167 (or 711157 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The spelling of 318646136128 in words is "three hundred eighteen billion, six hundred forty-six million, one hundred thirty-six thousand, one hundred twenty-eight".