316816819506 has 128 divisors (see below), whose sum is σ = 796001126400. Its totient is φ = 92522364480.

The previous prime is 316816819499. The next prime is 316816819507. The reversal of 316816819506 is 605918618613.

316816819506 is a `hidden beast` number, since 3 + 1 + 68 + 1 + 68 + 19 + 506 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (316816819507) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9405811 + ... + 9439433.

It is an arithmetic number, because the mean of its divisors is an integer number (6218758800).

Almost surely, 2^316816819506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 316816819506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398000563200).

316816819506 is an abundant number, since it is smaller than the sum of its proper divisors (479184306894).

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

316816819506 is a wasteful number, since it uses less digits than its factorization.

316816819506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34221 (or 34215 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 316816819506 in words is "three hundred sixteen billion, eight hundred sixteen million, eight hundred nineteen thousand, five hundred six".