318728280768 has 112 divisors (see below), whose sum is σ = 892592413440. Its totient is φ = 100094745600.

The previous prime is 318728280653. The next prime is 318728280769. The reversal of 318728280768 is 867082827813.

It is a super-2 number, since 2×318728280768² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (318728280769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418933 + ... + 901643.

It is an arithmetic number, because the mean of its divisors is an integer number (7969575120).

Almost surely, 2^318728280768 is an apocalyptic number.

318728280768 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318728280768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446296206720).

318728280768 is an abundant number, since it is smaller than the sum of its proper divisors (573864132672).

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

318728280768 is a wasteful number, since it uses less digits than its factorization.

318728280768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482926 (or 482916 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 60.

The spelling of 318728280768 in words is "three hundred eighteen billion, seven hundred twenty-eight million, two hundred eighty thousand, seven hundred sixty-eight".