320213760136640 has 112 divisors (see below), whose sum is σ = 796589289216000. Its totient is φ = 122460295050240.

The previous prime is 320213760136637. The next prime is 320213760136757. The reversal of 320213760136640 is 46631067312023.

It is a junction number, because it is equal to n+sod(n) for n = 320213760136591 and 320213760136600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193632140 + ... + 195278859.

It is an arithmetic number, because the mean of its divisors is an integer number (7112404368000).

Almost surely, 2^{320213760136640} is an apocalyptic number.

It is an amenable number.

320213760136640 is an abundant number, since it is smaller than the sum of its proper divisors (476375529079360).

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

320213760136640 is a wasteful number, since it uses less digits than its factorization.

320213760136640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388911130 (or 388911120 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 44.

The spelling of 320213760136640 in words is "three hundred twenty trillion, two hundred thirteen billion, seven hundred sixty million, one hundred thirty-six thousand, six hundred forty".