320845951764 has 144 divisors (see below), whose sum is σ = 897285742080. Its totient is φ = 96620247360.

The previous prime is 320845951753. The next prime is 320845951771. The reversal of 320845951764 is 467159548023.

It is a happy number.

320845951764 is a `hidden beast` number, since 3 + 20 + 8 + 45 + 9 + 517 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 320845951764.

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, 3674169 + ... + 3760479.

It is a 1-persistent number, because it is pandigital, but 2⋅320845951764 = 641691903528 is not.

Almost surely, 2^320845951764 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 320845951764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448642871040).

320845951764 is an abundant number, since it is smaller than the sum of its proper divisors (576439790316).

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

320845951764 is a wasteful number, since it uses less digits than its factorization.

320845951764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86407 (or 86376 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 320845951764 in words is "three hundred twenty billion, eight hundred forty-five million, nine hundred fifty-one thousand, seven hundred sixty-four".