305665940316 has 144 divisors (see below), whose sum is σ = 818611944192. Its totient is φ = 88536687360.

The previous prime is 305665940309. The next prime is 305665940323. The reversal of 305665940316 is 613049566503.

It is an interprime number because it is at equal distance from previous prime (305665940309) and next prime (305665940323).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 71365111 + ... + 71369393.

It is an arithmetic number, because the mean of its divisors is an integer number (5684805168).

Almost surely, 2^305665940316 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 305665940316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409305972096).

305665940316 is an abundant number, since it is smaller than the sum of its proper divisors (512946003876).

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

305665940316 is a wasteful number, since it uses less digits than its factorization.

305665940316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6472 (or 6459 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 48.

The spelling of 305665940316 in words is "three hundred five billion, six hundred sixty-five million, nine hundred forty thousand, three hundred sixteen".